What's the point of G+ if they are just integrating it and pretending it's a social network, but not a social network at the same time. The only thing I've seen come out of it is G+ profiles in the SERPs and that's about it really... Realistically the only way to really authenticate users is to get ID/CC information of the user, everything else can be faked.
I get the idea of "un-anonymizing" the internet, but at the end of the day, that's one of the cornerstones behind the internet. So if they keep shoveling this G+ down everyone's throat, they'll end up alienating people that want to troll and bring excitement to those same services. Those people will just move on to different properties and those properties will then become the new hot thing taking away the pageviews that Google needs for those advertising dollars. Trying to get rid of the anonymity of the internet is like trying to get rid of the dark by shining a flashlight, one area might be lit, but it's only the area you shine.
Most trends are set by the younger generation, which youtube has a great grip on. The problem is there is no monopoly if someone can come along and re-create the service and do it better and the consumer can flock in droves away. Yeah, the professionals may stay on youtube, but if the pageviews aren't there most publishers and content creators will move on, to where the audience is. Trolling is a part of the internet.
Bill Gates once said "Success is a lousy teacher. It seduces smart people into thinking they can't lose." Google thinks it can take on any and everything and problem is failure is always around the corner for everyone. When you've got massive amount of your userbase angry and crying foul over and over, eventually, a new solution will pop up.
Another Google failure - Google Checkout:
https://support.google.com/checkout/sell/answer/3080449?hl=en
Closed it's doors cause it just wasn't getting adopted like they wanted it to. Last day to charge orders is on November 20th, 2013. The main reason is lack of mass adoption - a prime example of them trying to force something onto people. With Youtube, they bought that audience, and are now attempting to force it into something it's not.