Whereas my library of virtual assets will probably evaporate into ether before I'm even retired.
If it uses GPU rendering, possessing physical media doesn't mean much. GPU vendors aren't that diligent about making sure old games run properly on their current hardware offerings.
Even for physical media for console games, patches DLC are delivered through the console's online service. Once that ends, as it has for the PSP and original Xbox, you're left with the game as it was originally released with whatever bugs it contains.