From the individual incentive standpoint, it's not immediately clear who would make a decision to establish such a pipeline and subject their organization to short-term competitive disadvantage. A CEO of a public company can't really say "our R&D is 2x our peers because we're building a pipeline".

What I suspect is going to happen is something like the regional pilot situation, where one toils for pennies at lower levels and then gets to comfortable compensation numbers 10-15 years later.