Billions of phones and most of the servers on the internet run on code that one or two people look after, a lot of it unpaid. An analysis was conducted reviewing a year of commits for 23 of these projects, finding that 11 of them came down to one or two people. xz is still basically Lasse Collin on his own after the 2024 backdoor, and the time zone file every phone reads is kept by a UCLA lecturer in his spare time.

https://sheets.works/data-viz/holding-up-the-internet