if you really want to stick it to Google you have to go for Firefox or something derived from it. Chromium gives Google a ton of leverage to push features to all of their downstreams. not sure what engine these are using, but i also prefer to use Firefox because it’s open source. if these were open source you could easily see which engine they’re using.
without checking, Gates’ wealth is probably tied up in a lot of MS stock, and he could probably walk into the office and ask the intern to get him a coffee. but yeah i think mostly retired.
Linus is still active is maintaining the Linux kernel.
and yes, this is fluff, not some kind of summit