They complain about a lack of talent, but really they're complaining about the high price of talent and the difficulty of enticing strong talent.
If they're not willing to pay enough to entice someone reputable to switch, they figure that a political solution is cheaper.
This isn't about developer X using framework Y; this is about research level PhDs (and equivalent) that cannot continue work for a US-based company because of visa issues.
Also, in the current system, even if he wants to steal people from other tech companies, there is a good chance those people are on H1B, and that it will be exceedingly hard to steal them without immigration problems (particularly if they are, as is likely, to have a green card application in process.)
Would you buy a hamburger for 100$? You cannot "just increase" what you are willing to pay. You are limited by market economics.