Big tech companies can play the lottery, smaller ones can't. And I don't see any need for a bidding process, which implies a fixed quota, a fixed closing date

Big tech companies can play the lottery, smaller ones can't. And I don't see any need for a bidding process, which implies a fixed quota, a fixed closing date for the bidding, and a lot of uncertainty. Just require the salary to be high enough to show you really need the skill, not to cut costs, and have a process with a guaranteed timing and outcome.