But those technologies are now used pretty widely across the whole tech industry, including in the hard sciences.
"the streaming video tech" integrated the player into the browser to control it and show ads. not much gained imo.
Compare Mapquest vs Google Maps to know why Javascript is important
If you don't know what Mapquest was, there's your answer
So you can tell me that Javascript is important, and I won't argue that, but it's like nuclear power. It can be used for good or evil. And you don't want to get any on you. (With apologies to Dilbert.) It seems like Brendan Eich is a nice guy, but if he knew how people would use JS to make the average top-100 site today -- and make page loads take several seconds over a gigabit ethernet connection on one of the world's fastest laptops -- would he do it all over again?
Google maps was better than Mapquest when Google first put theirs on line, and better than either one is any more.
Google has simply declined below the baseline by failing to be as useful as they once were.
Mapquest remains more performant if less popular by comparison.
A reasonable explanation is that Google engineers & business operators are not as advanced as they were 20 years ago, likely not as dissimilar to average employees elsewhere any more.
This kind of thing is more common than you think.
From what I understand of the 21st century hiring process that is expected.