That’s been the case since Reagan really.
And qualifications didn’t matter before, too. All that matters was being part of either the military, corporate or evangelical elites.
Reagan was a Governor, which has historically been the best qualification one could have before running for POTUS, especially when its a major state like California. Trump is really the first example in modern history who has tangibly removed the barrier (and not necessarily in a good way) that people needed to be politicians to run for higher political office.