Booming tech salaries and the resulting wage gap have put the greater San Francisco area at the center of conversations about income inequality in the United States. It's even become a central issue for a certain not-running-for-president billionaire, Facebook CEO Mark Zuckerberg.

In particular, Zuckerberg is an outspoken advocate for a universal basic income, which would guarantee all citizens a monthly stipend to cover basic expenses like food and rent.

Turns out, Zuckerberg isn't the only CEO who thinks it's a good idea.

Slack CEO Stewart Butterfield took to Twitter on Friday to further a discussion on the role that family money has played in some of the most successful businesses.

"Doesn't have to be much, but giving people even a very small safety net would unlock a huge amount of entrepreneurialism," Butterfield Tweeted.