The only asset from the telcom bubble that was still valuable was fiber in the ground. All the endpoints were obsolete and had to be replaced within a few years. The fiber could be reused and installing it was expensive, so that was the main asset.
What asset from the AI bubble will still be valuable 5 years later? Probably not any warehouses full of 5 year old GPUs. Maybe nuclear power plants?
I doubt they will manage to do a significant nuclear buildout in mere five years. But future renevables will potentially benefit from the stronger grid.