>Will this still be the case in 30 years when India and China’s economies have matured and high paying tech jobs can be found elsewhere?
Even EU can't compete with the US on funding and high tech skilled wages(except London and Switzerland which aren't in the EU), what makes you think India and China can?
> where they’ll be developing the economy of those countries rather than that of the US
To develop companies that can threaten the established US ones you need more than educated capable brains, you need massive amounts of VC funding, which even the EU doesn't hand out, let alone see India and China match not only enough money to catch up with the US, but also to overtake it. Returning Indian and Chinese engineers and scientists means nothing if there isn't tens of billions waiting for them in funding when they get home.
Even EU can't compete with the US on funding and high tech skilled wages(except London and Switzerland which aren't in the EU), what makes you think India and China can?
> where they’ll be developing the economy of those countries rather than that of the US
To develop companies that can threaten the established US ones you need more than educated capable brains, you need massive amounts of VC funding, which even the EU doesn't hand out, let alone see India and China match not only enough money to catch up with the US, but also to overtake it. Returning Indian and Chinese engineers and scientists means nothing if there isn't tens of billions waiting for them in funding when they get home.