If "good definition of minimum broadband speed", then "applies to the majority of people". The converse is not true. It is not the case that if "applies to the majority of people", then "good definition of minimum broadband speed."
1. Whether a speed applies to a majority of people is necessary but not sufficient.
2. You are unknowingly accepting being ripped off. It's not reasonable for big ISPs like Comcast to offer me 300 megabits download 15 megabits upload for $70 a month (might've been $90, but assume $70) while EPB of Chattanooga [1] offers 1 gigabit symmetrical for $67.99 a month. What speed any individual actually needs doesn't have to come into the picture. In matters of consumer protection, the principle of the thing matters just as much as actual consumer needs.
Today's internet technology (particularly optical fiber [2], paired with hardware implementing DOCSIS 3.1 or 4 [3]) is fully capable of providing 1 gigabit symmetrical for "the majority of people", even in rural areas. Moreover, in the long term, transitioning to fiber would be less expensive to the big ISPs like Comcast [4], but Comcast keeps raising prices on broadband over decades-old copper wires and committing subsidy fraud [5]. Don't let big ISPs define "good enough" to be much lower than technology and the price of the technology allow.
Going by the Chattanooga metric, 100 mbps symmetrical should cost no more than $10, and anything lower is not a good definition of minimum broadband speed for the present (never mind the future).
[1] https://www.eff.org/deeplinks/2019/10/why-fiber-vastly-super...
[2] https://en.wikipedia.org/wiki/DOCSIS#Versions
[3] https://epb.com/fi-speed-internet/gig/
[4] https://www.eff.org/deeplinks/2020/06/why-slow-networks-real...
[5] Pick any one of these links. https://www.techdirt.com/2020/10/06/mississippi-says-att-too... https://www.techdirt.com/2023/02/15/report-shows-comcast-con... https://www.techdirt.com/2023/02/16/verizon-t-mobile-oversta...
--------Everything below this line is bonus.--------
The following excerpt is from an article about data caps [6] but applies equally well to the state of broadband pricing in general.
> Network congestion arguments in this debate operate on an unsubstantiated and uncontextualized assumption of scarcity — there is only so much bandwidth, and a few people are going to use it all. Yes, some network congestion arguments have prevailed with wireless broadband because of the atmospherical and technical limitations of the medium. However, congestion is not as consequential for fixed broadband. Broadband providers reason that instead of limiting these internet “super-users” (which would be discriminatory and litigated accordingly), they need to implement data caps for all consumers, which they claim is fair and unbiased. However, scarcity is not a reality for broadband providers, even with super-users. Internet functions by “statistical multiplexing” meaning that bandwidth is dynamically allocated and reused without a limit “[u]nlike other utilities such as water, electricity, gas or oil.”
[6] https://publicknowledge.org/no-cap-the-truth-about-data-caps...