GOG has much better policies.
For example, GOG sells some games that try to phone home. Many of these were games/franchises that did business with GOG, then were bought.
Take a look at the reviews for Kerbal Space Program, or Stellaris for some of the shenanigans that happened after a game was released.
But because their stance is no-drm and you can play all their games offline, you can block them and the game will still run.
There is no such stance with steam.