The US is still extremely attractive, especially for STEM talent.Indian educated migrants think of Trump as a temporary phase; and given how migrants power the American tech industry, they feel impervious to most Trump related threats.
Trump is by no means a temporary phase. The demographic trends that led to Trump will continue for a long while.
The "big sort" means that 70% of US population will be represented by 30 senators by 2050. Guess which party the other 70 senators representing primarily rural populations will belong to? The republican advantage in the electoral college will continue to grow as the rust belt becomes older and whiter. The supposed democratic flips of Arizona, Georgia and Texas due to rising Latino population are still far away in future and in the meantime, republican voter id legislation and gerrymandering of state-level districts to control state-level legislatures will ensure they remain red for the foreseeable future.
What all this really means is that the current situation -- where winning the primary is far more important than the general for republican politicians -- will continue for at least a decade or two more. Which means we WILL have more Trumps. The scary part of this is that the next guy won't be as incompetent at implementing his own agenda as this one.