In all MMOs you have to grind. What is the diiference between F2P and P2P then?

Since you used Trove, I am going to use Rift as an example, since they are both run by Trion.

For Rift, when it was P2P, there was a grind. However, when the game when F2P, there was also a grind. But the difference was that they increased the grind by a lot. They included even more lockouts. However, they allowed you to bypass those new grinds they implemented by paying.

So, what's the difference? In F2P games, the devs will increase the grind by a lot more to encourage people to buy the grind reducing items. That's how F2P is. They design the game to encourage/force people to spend more.

And ugh. You had to use a Trion game. I hate their F2P model. They outright sell gear, including raid gear, on the cash shop. Guild Wars 2 cash shop is a lot better.