The injustice is not (just) Yelp paying $200k instead of $150k, it's an engineer in India with the same skillset earning $30k. Or any number of projects not being undertaken at all because the return is less than $200k.

I don't know what the solution to education financing would be in this scenario; perhaps something like Singapore's Tuition Grant Agreement obligating students to stay in-country or pay a big penalty to leave.