The very first Youtube video is still up. Any serious competitor is going to need to offer that level of reliability with added benefits to woo users over.
Seriously! Even back in 2007 I was all "chrome is faster? Great, now Firefox has some competition" I never switched to chrome. You couldn't pay me to use that privacy nightmare.
Oh, it's supposed to be "Post-iz" not "Poz-tiz" like I read it.