I think Microsoft actually just hired experienced H1Bs instead of new college grads. And they have such a moat with their corporate customers using excel, outlook, etc that execution doesnt matter as much for them.
An acquaintance is an H1B at an Alphabet (owned) corp, hired to work a position that anyone with an Industrial Engineering BS could. And he only found out who owned his employer after an inspection by HQ prior to the scale up for Bard.
I'm happy he got the opportunity, and it enabled his family to marry him and for his new wife to come to the US and start a teaching position at a university, but his role could have been filled by a local grad... if they could have been convinced to accept his salary.