If you need image recognition, and a 30B model saturates the use case with 100% accuracy, you absolutely wouldn't continue to use the next frontier model as they come out.
And I'd argue most economically meaningful tasks will be saturated by cheaper models than those requiring frontier.
Think about what today's models can do with pretty close to 100% accuracy, and then consider that they will be orders of magnitudes cheaper over the years.
5.6 Sol can already obviate tons of labor, and why would you pay 2x or more for no meaningful gain?
The relative gap between frontier and non frontier also continues to shrink, so it's not like you take a meaningful performance loss by rewinding to models from 3-6 months ago. And soon that gap will expand to 12-24 months.
I get the impression the majority of people on here only think about coding, which net net will be a tiny volume of overall AI use in the end.