Years ago, EVE corps swapped Unicode lookalike characters in patterned ways, inserted patterned zero width space characters, and put very slightly color shifted background watermarks into forum posts to detect leaks.
Consumers use these every single day in embedded devices without knowing it.
I wouldn't be surprised in the slightest if the embedded DDR3/DDR4 market greatly exceeds the number of consumer desktop computing devices in terms of "devices with memory" (not in sheer IC count or nominal size though.)
The level of design effort and PCB expense to go from DDR3 to DDR5 is enormous.
Only the oldest, most unique model years: nobody is buying (C4-C5-realistically C6) mid-90s or early 2000s Corvettes for more than what they paid for them, and they never will.
This list isn't exactly describing "bans," this is a city contract rejection list - otherwise known as a "just deploy in commercial parking lots abutting major thoroughfares" restriction.
Which in many (not all) states can promptly be followed by a Motion to Transfer/Notice of Removal/whatever local custom to a county/circuit/district court.
Once moved to a higher court, you will lose because you don't know the procedures, deadlines, and customs of that venue. Then, the counterparty will often be awarded fees.
This already happens for basically every commercially-available ink cartridge.