I wouldn't call it generosity - it's supply and demand like anything else. There is money to be made from tech products, whether that's software itself or anything (i.e. almost everything) containing software. There is a limited supply of good developers with the skill/experience to develop complex products and ones with high reliability requirements.

It'll be interesting to see how the use of AI-based software development tools plays out, and affects the job market, but so far - together with offshoring - it seems to be mainly a matter of limiting entry level opportunities. Whether this persists or not remains to be seen - companies seem to be hoping/expecting that AI will let them cope with fewer entry level developers, but given that currently you need a human to use the tool it's not clear to what extent that is actually true.

Trump has recently, somewhat unexpectedly, been making noises about offshoring and H1B developers - saying that US companies need to be more patriotic in their hiring practices. It remains to be seen if this will progress from bullying to actual policy/law changes, but a reversal of offshoring would do a lot to improve the US job market for developers, especially entry level.