If Google controls the spin-off, then the problem is not resolved. The whole point is that the government doesn't want Google to control it. And if Google does not control it, then who does? The judge?

There are a lot of seemingly simple "solutions" to this problem that just don't hold up under a modicum of scrutiny.

Any company purchasing Chrome would do it for power – since Chrome can’t become a paid product.

Any NGO receiving Chrome would be extremely vulnerable to spying, because of the immense power of having software installed on a billion computers.

Mozilla already exists, and it behaves as a non-profit arm of Google. If you created another non-profit it would do the same unless it was banned from receiving money from search engines (but then it would have no money.)