That's exactly how Google, Facebook, Amazon, Microsoft and most other big companies view software engineers. Engineers go through standard interview process (3-5 technical interviews, 1 behaviour interview) and then companies assume that everyone above the hiring bar can be assigned to pretty much any project at the company. Companies use this process because it works - engineers are mostly fungible.

The above is not true for exceptional talent (Linus Torvalds, John Carmack, etc). I will vote in heartbeat for visas for people with total comp >$300k. If you are truly that valuable, you should be paid more than average Sr. Software Engineer at Google.