Note, it is actually easier to profile a known dram chip set bonded to the PCB. A lot of products already do this like phones, tablets, and thin laptops.
Where as SSD drives being a wear item, should be removable by end users. =3
Surely someone can do it, but it's probably too niche to do. The licensing fee is probably cheaper than corporation spinning the board and reverse engineer it and for hobbyists lower tier memory likely was fine.
That said given that such technology has become so much more accessible (you can certainly create FPGA board and wire it up to DDR4 using free tools and then get board made in China), it's probably a matter of time someone will figure this out.
So if you can move complexity over to the controller you can spend 100:1 ratio in unit cost. So you get to make the memory dies very dumb by e.g. feeding a source synchronous sampling clock that's centered on writes and edge aligned on reads leaving the controller to have a DLL master/slave setup to center the clock at each data group of a channel and only retain a minimal integer PLL in the dies themselves.