>The ad team prevailed, this person said.
Of course the ad team would prevail, that's how Google makes money.
>One person who has spoken to Fuchsia staff described the effort simply: "It’s a senior-engineer retention project."
So Fuchsia is a way to keep your best engineers employed at your company and a better OS to replace Linux comes into the second reason. At least the project is open source, I have no idea how readable or comprehensible the code is, but it's there.