Old enough here to remember Intel exiting the DRAM business.

Same! And then they made new eDRAM for a hot minute as part of Crystal Well. It'd be fun to see them get back into the game in a serious way, but their on-again-off-again attitude toward dGPUs does not give me confidence in their ability to execute on such long-term plans.

Old enough here to remember Intel entering the DRAM business :-)