The consoles are much easier to develop for -- debugging GPU problems across hundreds of GPUs by three manufacturers is so much harder than doing so on a single (or two, if you count the two major consoles) GPU type. They also make a larger share of the revenue than PC games do. They don't drain attention, they put attention where the most revenue for the least work is.
And from a user point of view, PC gaming just got exhausting for me. Driver updates, keeping up with GPU upgrades... or I can plunk down some money on a box that Mostly Just Works. Yes, there's parts of console gaming that annoy me. I dislike having to have a PS4 and an Xbox One, which are like 80-90% of the same damn hardware, to play all the games I want. This goes doubly because the PS4 has marginally better hardware (minus the controller, which is improved from previous generations but not as comfortable as the Xbox controller) and the Xbox has outrageously better software, so I'm missing out on something no matter which console I'm using and I can't crossplay with friends on a different console. But those annoyances are small potatoes given how much time I've sunk into getting PC games to run optimally.