The key difference is people understand you’re paying the firemen for the emergencies- but a lot of SREs are actually firemen but paid like developers.
When everyone is quietly pretending you’re not a fireman but you are it leads do a disconnect where everyone is playing charades.
The people handling the emergencies should get paid considerably more than developers - when they system is down, the real, actual, company-sustaining money stops coming in.
But on the other hand they don't add new features or push product forward in any way.
Maybe this is okay for a late stage company that is in the value extraction mode. In that case the private equity playbook is to lay off the app developers, and they can throw more money at ops to increase efficiency of the shrinking pie.
On the other hand if you're in a highly competitive growth industry then you need to innovate, and if you optimize for SRE talent, you won't have sufficiently senior engineering talent to find the right balance between innovation and stability.
When everyone is quietly pretending you’re not a fireman but you are it leads do a disconnect where everyone is playing charades.