This is the first in a series of blogs this week that will look at the long-term trajectory of the broadband industry.

The recent decision of the FCC to increase the definition of broadband from 25/3 Mbps to 100/20 Mbps got me thinking about the long term trajectory of the demand for broadband speed. For many years, Cisco issued reports that regularly reported that the demand for speed was growing at roughly 21% per year for residential broadband, and a little faster for business broadband. Cisco and others noted that the curve of broadband speeds was on a relatively straight line back to the early 1980s.

It’s not hard to test the Cisco long-term growth rate. The following table applies a 21% growth rate to the 25/3 Mbps definition of broadband that was established by the FCC in 2015.

This table is somewhat arbitrary since it assumes that broadband demand in 2015 was exactly 25 Mbps – but there was widespread praise of this definition at that time, other than from ISPs who wanted to stick with the 4/1 Mbps definition. This simple table accurately predicts that we would be talking about the need to increase the definition of broadband to 100 Mbps download around 2022 – which is exactly what happened. The FCC had to deal with political issues and wasn’t able to make the change until March 2024 – but in 2022, the FCC wanted to change the definition of broadband to a speed that was at a 21% compounded annual growth rate from the definition the FCC had established in 2015.

I can’t think of any fundamental changes that would say that this same growth in demand won’t happen in the near future. Consider the following chart that starts with the assumption that 100 Mbps is the right definition of broadband in 2022. Growing that number over time by the same 21% results in the following table. This table predicts that by 2030 we should be having the conversation about increasing the definition of download broadband to 500 Mbps. This prediction seems very reasonable to me.

However, 2030 is only six years from now, and today’s topic is looking into the future. One way to think about future demand is to look back at the broadband speeds 25 years ago. In 1999, both telcos and cable companies offered 1 Mbps DSL broadband connection as an upgrade to dial-up – and 1 Mbps became the de facto definition of broadband at the time. Twenty five years later, the definition of broadband was increased to 100 Mbps, a 100-fold increase. This tracks directly with Cisco’s reported growth rate, and the growth rate of download speed between 1999 and 2022 works out to be 21.2% per year.

There are a lot of reasons to think that the demand for faster speeds will keep growing. Every year we find more uses for fast broadband. If we plot the demand for broadband speeds out for 25 more years, at the historical rate of growth, demand would be 100 times higher in 25 years than it is today. That would mean the right definition of broadband in 25 years would be 10 gigabits.

I know that a lot of people will jump all over this prediction and say it’s ludicrous and unrealistic. But consider the last 25 years. You would have been hard pressed to find anybody in 1999 who would have predicted that the definition of download speed in 2022 would be 100 Mbps. This is partially because the human mind has a hard time accepting the results of compounded growth – the results after many years of growth always feels too large. I was already running my consulting company in 1999, and I don’t recall anybody who was visionary enough to predict a hundred-fold increase in broadband speeds over twenty-five years. Anybody saying that would have been laughed out of most industry forums – it would have sounded like a fantasy. Yet here we are – the demand for download speed really increased 100-fold since 1999.

There is one weakness in my argument – it’s very hard to pin down a concrete number for the demand for broadband speed. In the context I’ve been using (and the way the FCC looks at speed), broadband speed demand is a composite number encompassing the average of all broadband users. There is a wide range of opinions on the right definition of broadband speed. ISPs operating older and slower technologies still swear that 25 Mbps is all the speed anybody needs. Fiber ISPs think the definition should be gigabit since one-third of households are now subscribing to gigabit speeds. The fact that the FCC set the definition of broadband to 100 Mbps is an interesting data point – but the FCC definition of speed doesn’t mean much more than that it’s a conservative compromise of the many opinions from around the industry.

There are more concrete data points to consider, and the next blog in the series will look at the demand for broadband usage.