Examples of assholes abound, sure.

Einstein was, by all accounts I've seen, a pretty nice fellow. Being an asshole isn't a required characteristic.

Einstein's breakthroughs happened alone, in a tiny window of highly productive years in his twenties. The rest of his life contained little of note and he never needed to build a huge/excellent team to accomplish what he's famous for. The "asshole" aspects of famous business leaders occur because they need to drive enormous groups of people beyond what they thought they were capable of.

May I be as unsuccessful as Einstein someday.

Sub in Tony Hsieh, or Costco's CEO, if you prefer. Both are known for being particularly protective of their employees' well being.

>Einstein was, by all accounts I've seen, a pretty nice fellow.

Except to his wife.

If we're setting "never had a failed relationship" as the bar, virtually everyone's an asshole.