As recently as June of 2019 Google was actively planning to break ad-blockers by creating and implementing their Manifest v3 changes, which would change how the API's that the blockers use work. source

In November, they started implementing the change in the development branch, Chrome Canary. source

Google's Response to the public outcry in June was to claim, No, Chrome isn’t killing ad blockers -- we’re making them safer So much like politicians like to scream for the kids, Google plans to scream for security! Despite months prior claiming it was to increase performance.

If you are thinking well I'll just use Firefox or Microsoft Edge, well Firefox likes to remain compatibility with Chrome so it's easy for extensions to work on both, they don't want a scenario where extensions aren't available for them because most people use Chrome, but they have said they have no plan to implement or make mandatory that specific part of manifest v3. Microsoft had originally come out against the change but then decided to go all-in with Google by making Edge a chromium-based browser so who knows. Mozilla's page on Manifest V3

So to answer the posts original question, we haven't won and the battle rages on with King Google ready to strike a decisively bad blow to adblocking. It really was a bad decision to let an advertising company become the creator of the world's leading internet browser, we should have known one day they would come for the extensions that hurt their bottom line. Much like the ISP owning the Cable companies.