I think I am losing my best friend over money.?

[C]

I met my best friend during Freshman year of HS. Now we are Freshman in College and I think we are falling apart. To put our relationship into one word, it'd be brothers. Whatever he'd partake I'd probably be right with him. Me and him always thought of ways to make money and such, and would always hang out and think nothing of it since it was natural to us. Until recently he's been distant due to him taking part in a MLM business. We both went to "an informational event" that a mutual friend invited us to. Looking back at it I wish we had never went. I really don't see any success in MLM and he didn't too initially, but a week went by and he hinted that he say something in it. That was over 2 weeks ago, which is the last time I've really had a conversation with him. I had to find out through social media that he now has a "team" and is taking this MLM stuff seriously. He's supposed to make a ton of money and whatever, and I really hope he does, but I did not think that meant stop communicating with me. It's killing since that's literally like a brother to me, and I feel horrible about it. I can't even talk to him about, I don't know why since it looks like he doesn't want me in his life anymore. Any advice or tips. I think once he stops this MLM thing he'll be back, but I feel bad since I feel like I'm wishing him failure, which I'm not. But i want things to be like they used to.
Thanks to everyone that read it all.
@Liz - it's like he doesn't want to communicate. I suppose you're right. Guess it's life....
@Chris, you really think MLM isn't something good to take part in?