Google never wanted to have these adblock extensions on their store in the first place, it just turns out that when chrome was released and had zero market share they had to make this huge compromise to gain territory in the browser arena and eventually overthrow Firefox and the competition. And when (not if, when – it will eventually happen) they do that I will jump off from the Chrome bandwagon.
"When" they do that, it will be because they have judged that they have, by then, thoroughly extinguished all competition. If you (the royal "you") want there to exist an alternative browser to which to jump to when the time comes, then consider making the jump today, when your influence might still make some small contribution to the competitiveness of the browser market.
Chrome serves me just fine nowadays. Unlike you, I'm not some kind of Gandhi of the tech scene or anything like that. If it serves me fine I won't stop using it. If Chrome ceases to support adblock extensions then I will go look for some other browser, I would probably change to Vivaldi or anything like that, or even Firefox, they sure as hell will be there.
For as long as you, I and everyone else continues to use Chrome, we effectively support Google's ability to monopolise the browser space.
Google's continuing monopolisation of the browser space will (and is?) leading to a dearth of alternatives.
So, by waiting for the time when Google finally puts that final straw on the haystack which makes this whole thing too onerous to bear - and then you say "right, now I've finally had enough - I'm switching ...."
... you may find that there's nothing left to switch to.
