What happened to Garena ?

Hi all, long time no see.

Last time I played Warcraft 3 was, around 2012 I think ?

We used to use Garena to play Warcraft 3 custom games, we mostly played trolls vs elves, DotA, bunch of arena maps, and some other custom maps.

Now I see Garena no longer has Warcraft 3 at all.
What happened ?
I remember those rooms were FULL, and I mean FULL, we had like bazillion rooms and they were all full and with lots of players.

How did it all fall apart ?