It's the only logical outcome given enough time, if you think about it. It's like entropy. Power just keeps consolidating and spreading as far as it can, infinitely. Any entity that stops trying to gain more power will eventually get absorbed into one that does.

For example, a cavalcade of charismatic celebrities spewing support for current thing™️is a very valuable asset. If the CIA hadn't sunk its claws into Hollywood to turn it into a propaganda mill, someone else would have.