I started with Comcast with 12Mbps service. Over time, they increased the base speed they offer to 20, 25, 50, and now 75. They have done this because they want to have x% of their customers on "broadband", per the federal definition.
This is all well and good, but they keep increasing the price, and refuse to offer lower-tier service. I probably wouldn't want 12Mbps anymore, but 20 or 25 would suffice. I wish I could pay a fraction of what I'm paying for 75Mbps and get a lower tier of service. It should suffice that x% of customers are offered "broadband" for a reasonable price, even if some choose a lower speed.
Ultimately, this comes down to competition. There are no other wired options where I live (in the heart of Silicon Valley). I have considered using a cellular hotspot, but it's not competitive in terms of pricing.
I'm all for prodding companies to move to faster speeds, but there should still be room for consumer choice.