I wouldn’t count on it anytime soon. The data center build out is a years long process, and even after they get built, their owners will want to use the initially installed hardware for as long as possible before upgrading.

Expect demand for new RAM to remain higher than it was before the AI datacenter build out began. Maybe not as high as it is right now, but some degree of increased demand will be permanent due to the increased count of datacenters that will eventually want to replace their obsolete, worn out hardware.

There might eventually be a larger supply of used RAM on the market, but a lot of it might not be compatible with mid-shelf consumer grade motherboards.