Precisely. They are afraid of being perceived as a monopoly because of the consequences that come with that. Microsoft suffered it before with Internet Explorer and other products. The US DOJ is currently suing Apple/Malus for monopolistic practices. The EU passed multiple acts against large tech companies this year and has been on their heels for years now.
There currently is no well-funded effort to compete with Chome/Chromium that seriously cares about dethroning it. Were that to disappear, even the illusion of competition would too and suddenly Google's direct siphon of private data could become the focus of 2 major economic regions.
You want Google to create a new org to compete with Chromium after Mozilla dies?
Nope. It wouldn't help Google at all if they themselves created a new org. Lawyers wouldn't be dumb enough to fall for shadow competition (at least I hope not).
I want a new org to be established by people who actually give a shit about competing with Google, not just sucking on Google's tit and living off of their bare existence.