I see what you're saying but let me give a counterpoint:

Do you think it's good for a team to not trade for an awesome player because they are afraid that some current players (who they like) are going to be upset about having to ride the bench?

In my view, how the team as a whole is doing (US) is ultimately what's going to be better for everyone.  Big innovations really do trickle down. And what hurts now will be to our benefit in the coming years.

playing /bracket, assisting /bracky, talking /greatbooks

Is he building America’s team or his own?

🥑🍋 Farmer / LAMP stack dev / Husband / 🌈 Dad / Web1 dude loving a web3 world / Collector of things digital & physical / 
CdeP ‘94 

He seems to say that his team winning depends on America's team winning. This makes sense to me.

I think this is overstating how much this broad policy – skilled immigration – will impact Elon's companies compared to US at large.

The US benefits directly from the policy; Elon's companies benefit incidentally, being US companies.

Or do you think that Elon's companies are going to be winning from these policies *at the expense* of the US as a whole?

Back to the sports analogy.  How does a privately owned team having a winning lineup benefit the population at large?  Better entertainment?  No. It’s just helping the guys at the top make bigger profits.