Nah, just the "PC Master Race" culture will collapse, which is probably a good thing.
PCs are tools. DIY PCs are other tools, be it a NAS, a server, a rendering box, or what have you. Lawnmowers aren't really improving that much, but there are plenty of DIY lawncare people around the USA. If your "gaming box" doesn't need a $5000 GPU, then its probably a good thing to stick with $500 GPUs or cheaper.
The concept of "keeping up with the Joneses" is pretty toxic in general IMO. Its one thing if you want better raytracing performance because you wanna see what it looks like. But its another thing to be buying $1500 GPUs just because they exist.