We've gotten to a point now where ultimately there needs to be a very short elevator pitch for any language to gain any traction at all. Anything longer than a sentence, it generally won't go far relatively speaking. It's like a calcification/maturity thing in big sectors of software engineering. You need a VERY good reason to upset an incumbent. "Because we know it/because everyone uses it" is a powerful motivator.
> "Because we know it/because everyone uses it" is a powerful motivator.
It's fundamentally a "we want workers to be interchangeable cogs" motivator; it's a deprofessionalizing move that's against the interests of all programmers per se. Managers can repeat it, but there's no good reason for developers to do anything but resist it where we can.
The other side of this for developers is that the places where "everyone knows X" precludes all non-X options are actually signaling loudly that they don't much value developer autonomy. That's a useful signal worth attending to when applying for jobs.