To be fair, let's be glad that 80% of people don't use an ad block. If it were the opposite and 80% did use ad block, web services would be much more aggressive in combating ad blockers and many more of them would end up pay-walled (although it seems we're heading there anyway).
On one hand, I feel kinda bad that my ad-free experience is only supported thanks to those who do undergo the torture of ads, on the other hand, the companies have only themselves to blame. If web ads were decent, only limited to sides and headers or even between paragraphs of web pages and didn't cover the content you're trying to view, didn't try to trick you into thinking it's part of the content, didn't lead to malicious websites, didn't autoplay videos with sound or didn't put unskippable ads before and inside videos, I would have never felt the need to install an ad block.