It's been 27 years since Google Search launched, and I still find it very useful despite some perverse incentives. A pretty good run I would say. If OpenAI declines that slowly, and is then displaced by something better, I'd say it was a good outcome.
I hope it takes as long for AI enshittification, but the tech "cycle" has become shorter and the pressure to make revenue is much more intense than it was for Google.