Recently, I've heard of several companies folding up SRE and moving individuals to their SWE teams. Rumors are that LinkedIn, Adobe, and Robinhood have done this.
This made me think: is SRE a byproduct of a bubble economy of easy money? Why not operate without the significant added expense of SRE teams?
I wonder if SRE will be around 10 years from now, much like Sys Admins and QA testers have mostly disappeared. Instead, many of those functions are performed by software development teams.
I will also say that technology is more than just the website/app - it is also their supply chain and how they run the stores.