> You imply that all companies add value to society and all jobs are meaningful. That’s simply not true.

Most are. Unfortunately, people often don't recognize the immense benefit for society that some industries offer.

> Like are we doing anything meaningful to society by building 1 of those Google projects that gets killed in a few months?

Yes. Hindsight is 20/20, and making bets is (often, not always) worth it even if some fail in the end.