We did both for a relatively short period of time (about 1 year) when we were a profitable company. So... very special circumstance. Btw - its kinda cool that people even know the backstory to Twitch.
I remember listening to you guys talk about your experience starting the company on a podcast (I think it was Startup from Gimlet media?). It was an awesome episode (I think two actually) and was very inspirational to listen to. I love the part when you guys received the money during one of the founders' wedding and seeing the number on the bank account.
(my personal experience) 80% of the time, do both is the wrong choice. 20% of the time, it's the right thing. So say no 80% of the time and say yes less than 20% of the time.
1) Justin.tv 2) Twitch 3) SocialCam
I suspect if they had to choose one, they would have done SocialCam, and they would have missed the billion dollar opportunity that was Twitch.
Like most things, it depends.