I think scale has a lot to do with it. Google has enough money, know-how, and headcount to invest in good testing technology. Smaller companies are probably lac

I think scale has a lot to do with it. Google has enough money, know-how, and headcount to invest in good testing technology. Smaller companies are probably lacking in at least one of those categories. For example at my last company hiring QA interns was cheaper and faster than developing good testing environments. Of course it started to come back to bite them but at the time it was hard to construct an argument for anything else.