Yes: a number of non-profits exist, who operate high-bandwidth Tor exit nodes. In Europe and North America, many of them partnered with the German TorServers.net: https://www.torservers.net/partners.html

There are several reasons one might want to setup a non-profit for this: - we can pool resources (money, but also technical expertise, availability to reply to abuse mails, access to legal expertise ...); - it gives you greater (but still not great) media visibility for advocacy/outreach and running donation campaigns; - it puts you on better footing if/when contacted by law enforcement agencies; - it makes it easier to find networks that aren't heavily represented in the Tor network yet, and are willing to host exit nodes.

Full disclaimer: I am on the board of directors and sysadmin team of Nos oignons [NO], a French non-profit that operates Tor exit nodes.

[NO]: https://nos-oignons.net