That is still ignoring the fact that these individuals were in fact willing to take a corporate job, when their price was met. Maybe that price included the ego boost that comes with being part of an acquisition ("they really wanted me!"), or the "pedigree" that one plans to parlay into future opportunities.

Regarding the latter point, it seems that "key players" at "prominent companies" don't have too much trouble getting funding for startups when they move on, regardless of whether they were "talent acquisitions" or not.

Speaking from experience, when my previous employer got acquired by a megacorp, nobody was saying "I really don't want to work for megacorp, but maybe I will have an easier time getting funding later." No. It all came down to dollars and cents in the here and now, and the only people who turned down the earn-out offers (less than 10%) were those who had better options available.