I agree. To think that he did not support his own service is so ironic. Wonder what changed his mind now.
I love music and prefer to download and own my own stuff. I say this only because I am not that into the whole streaming service thing and so do not have a point of reference and must therefore ask -- If these deals are only exclusive for a month or three, will people really sign up just to hear the music sooner versus waiting until it is available somewhere else? I ask because when I worked as a DJ (don't ask it was a long time ago) I had noticed that sometimes I got a song that I played in the club for 6 months before it even hit the radio. So waiting a little until the exclusivity runs out doesn't seem a major problem.
If you read the summary posted by Macrumours (I know, it's a chore to be expected to read more than the headline) you'll see that he didn't own the rights to his own album because he was in a contract dispute with Death Row Records (his former label).
So what "changed his mind" was winning the contract dispute and getting the rights to the album transferred to him.