>Labor is absolutely the bottleneck.Question: Europe has had an open door migration policy since at least 2015 and taken millions of migrants, especially Italy and Greece. Why haven't all those migrants turned EU's or Italy or Greece's economies into a powerhouse and built US big-tech competitors here? Same question for Canada. When is that magic economic growth from population growth coming?
Answer: Because US invests more money in high growth sectors than EU and Canada combined, and because people aren't fungible cogs in a machine, that you can swap in and out and get the same economic output it's agrarian labor. Attracting the handful of the smartest people in the world with money and resources like the US did, is more important and ads more value to their economy than attracting millions of desperate unskilled laborers like EU and Canada did.
>but without people to pay for them
Yes, people to pay for them, as in billionaire VCs pay for them, not millions of poor uneducated people, those can't even pay their rent without government support let alone boost economy. They aren't gonna boost anything except Amazon fulfillment center and Door dash delivery rates.
So NO, I don't agree with you at all. EU has enough local skilled college educated people since university is free here, but it has no VC money to amplify their labor into economic output as proven how many EU's top minds choose to work for US companies. Adding even more random people to a stagnating economy just means lower wages and bargaining power with higher rents, not more wealth growth per capita. Your comment does not disprove any of this.