They worked around this with IPv6 by the fact that SLAAC exists and some devices insist on always using it. Your ISP has to give you at least 64 bits of address space or else some phones won't work on your network. And even if they only give you the bare minimum of 64 bits, you can subdivide it further without SLAAC if you know what you're doing.

Furthermore, the use of privacy addresses obfuscates how many devices you have.