Sure, there's a userbase, but you need a business model to take advantage of it in the first place because the benefit was the Telemetry (Google's) and Google's Ecosystem.
Also, the article specifically mentions Chrome, NOT Chromium (which again, is open), so what incentive would Google have to maintaining the project without their own version of it? Would they be bared from starting a new one? Would someone else take over Chromium? Who would have the resources to do such a thing other than say Microsoft who currently uses a Chromium browser?
Why not just go for the jugular and separate Adsense from the rest of Alphabet? It's the main driving force in all their dark patterns for all other platforms (Youtube, Android, Chrome, Search...)