Language and music aren't the same; arguably, the part of the class that involves learning how to hold an instrument correctly could be replaced by technology.
As for why this wasn't the case before coronavirus: there was no reason to. There wasn't good enough of a market. Now, there is, so perhaps some ideas from this situation will stick around for longer.
(Then again, I've heard numerous reports that in general, remote school classes are a huge dumpster fire. I don't expect any of that staying when the schools are allowed to reopen. But maybe the postmortems will bring some nuggets of insight about effective remote schooling.)
As for why this wasn't the case before coronavirus: there was no reason to. There wasn't good enough of a market. Now, there is, so perhaps some ideas from this situation will stick around for longer.
(Then again, I've heard numerous reports that in general, remote school classes are a huge dumpster fire. I don't expect any of that staying when the schools are allowed to reopen. But maybe the postmortems will bring some nuggets of insight about effective remote schooling.)