> Boom, problem solved

Not if your CI depends on github, or if you have specific actions to review things, or if you use SSO because you're an enterprise, or....

Workarounds exist for each of these cases, but they add significant friction. That's not terrible if you're one person, but if you're an org? big problem.

> or if you use SSO because you're an enterprise

Enterprise Cloud up time is 100% for last 90 days for most services, with a one being at 99.98 and one at 99.97.

Enterprise customers get an SLA

Most enterprises self host for all those critical things so they aren't blocked by third party service interruptions. SLAs might refund some money, but they won't recover the lost time.