[bigbuppo]

Fiber buried in the ground in 1996 is still useful. Servers from 1996, not so much outside of the retrocomputing community. The bulk of those trillions of dollars on AI is not going into useful long term infrastructure. It's going into equipment that will only be useful to scrappers after its initial life is over in three to five years as the sorts of places that can handle the heat load of 25 clothes dryers on high stuffed into 3.5 cu ft of space aren't going to run second hand machines. They aren't useful as in-office developer machines unless your office has 1000A of power to dedicate to that one single machine and the air conditioner need to keep the room the server is in from bursting into flames.

[RajT88]

The data centers are the reusable infra. Not the servers.

[bigbuppo]

Sure, the data centers can be used as hay barns.

[LtWorf]

And I suspect those GPUs don't even have video outputs so cannot be used as video cards.