Lurch,
I wouldn't go back to dial-up, you wouldn't like it and it is not likely you'd dent corporate revenue. You'd just move from paying one corporation for broadband to another for phone/dial-up for a comparable price. If you'd like to make a statement, look for a local/municipal/regional ISP, there are still some Wireless Internet providers, or even municipal optical networks.. Here is an incomplete map: https://muninetworks.org/communitymap . Even if you can't find a non-profit ISP, just stick with one that fights for Net Neutrality.
Also, keep in mind websites have increased in size at least ten-fold since dial-up was popular (and the number of http requests to load a page as well), accessing those same pages will be a lot more sluggish than it used to be, you will only be hurting yourself.
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