MadalinStroe: What do you mean? I thought people were pretty happy with the Expanse series. Personally I don't remember hearing any complaints about it being different from the books. Having said that... I haven't seen the last 2 seasons, so I don't know if they pulled a Game of Thrones ending.
I've seen the last two seasons and can attest that The Expanse is awesome, from beginning to end.
A Game of Throne ending, it is not.
To be fair to Game of Thrones though, they ran out of book material to adapt. Its not like they chose to wildly diverge at the end, they had nothing to go on (some outlines that GRRM gave them, that's it). The showrunners get a lot of flak (and some of it is deserved, they did bail out on the series early... they could have gone on a couple more seasons to wrap things up), but I think it was unfair to expect them to be of the same caliber as GRRM. How many writers can make that claim?