Honestly, it's more about CYA than anything. A sev 1 issue pretty much automatically means a ticket to all relevant vendors at large companies, and typically y

Honestly, it's more about CYA than anything. A sev 1 issue pretty much automatically means a ticket to all relevant vendors at large companies, and typically you'll have a dedicated SE and TAM that will join your war room. You don't want to be the guy whose idea it was to roll some DB you compiled from source off of github and now some critical functionality isn't working and it's on you to fix it. Even medium size businesses will pay quite a bit of money for support, just in case. Source: I've worked at a fortune 10 in IT. There, it wasn't uncommon to have your SEs from 2-3 different software/hardware vendors on the bridge while troubleshooting any production issues.