It's not difficult to understand, many voting this way are at best not worried because they are firmly entrenched in the PlayStation ecosystem and have a "got mine" attitude, at worst they are seeing this as a boon because it would keep games from others. If you are fine with Sony buying these companies, you should also be fine if Mircrosoft, or Nintendo, or Google, or Amazon, or Apple were to buy these companies.
To the people voting "I'm fine either way" who are okay with these other companies buying Capcom and or Square-Enix, I apologise for calling their vote disgusting.