I use FF to help keep the browser “market” competitive. We don’t want to end up in the same situation as early 2ks where html standardisation was essentially “internet explorer compatibility”, and if you wanted to use newer features as a web dev you had to put multiple implementations, one for IE, and one for the others, as in the browsers actually implementing the specifications correctly. Now MS didn’t exactly do nefarious things with their market power, it was rather neglect, but it damaged the industry nevertheless. For Google, in today’s market, I’d anticipate they would use it to make it very difficult to block ads etc. Internet will become less free.
WSL has many issues which are not getting fixed, and rather classified as “won’t fix, as out of scope”. Further, WSL isn’t supported on Windows Server, which is really annoying if you’re dealing with M$ only infrastructure at your company and hoping to use WSL as an alternative way of deployment.
It’s basically just a “cheapish” way of keeping Devs on Windows, preemting any semblance of competition by Linux desktop environments from forming. They know they lost the server market, but they can cling on to the Desktop environment market as much as possible, at the same time eating into apple’s market share in this specific power user market. Not that Apple cares that much anyway, they’re content with selling iPhones.