> But once you achieve market dominance, your priorities have to shift. It's no longer "why wouldn't you try this" or "let's do the right thing." It's "why would you rock the boat and risk the nice thing we have?" It's not just about profit. Careers and incomes are at stake. People will get hurt.

I don't get this.

Why did they kill so many products which were running on standalone tracks? (at least in my opinion)

If I look at https://killedbygoogle.com I see for example "Stadia", "Podcasts", "Domains", etc... - in my opinion those projects would not conflict with their current main activities being Internet search & email service, respectively whoever is involved in it (ok, maybe excluding allocations of budget - but it's not that Google has currently liquidity problems so it's not that budget for existing depts would have to be reduced...).