Most of this is self referencing. Like the default search engine is not an example of Google's control, it's Mozilla's revenue model.
The remainder sounds like personal gripes that you're misconstruing as evidence of nefarious intent.
There's also plenty of evidence to the contrary, total cookie protection to name but one.
Additionally, beurocratic processes produce terrible software. Log in to any govt website as a refresher.
Finally, browsers are incredibly complex, if this model worked you'd use it for much simpler projects first.
LOL. Sure mate. Keep smelling your own facts and I'll eat a bag of dicks when ... checks notes ... the Italian government produces a FOSS browser to compete with Chrome & FF 🤣