Comment by ezst

From the top of my head with dozens of others:

- Not all projects are suitable for hosting by third parties (you may not want to give away the special sauce behind your wannabe next trillion dollar company, or you may be handling sensitive or confidential data like medical records, etc)

- You are immune to the trending process recently referred to as enshittification that consists of providers in a consolidated market like this one giving you an increasingly worse experience to compel you into more expensive plans, i.e. you gain independence and control

- It might be a competitive advantage to your business to still have the lights on when inevitably the centralised platform becomes unavailable to most (think of trading and events like crowdstrike)