I just don't see the need for 12GB RAM. How many apps do people really need to be running simultaneously on a phone? Also keep upping the RAM available makes developers lazy and create bloated software which uses lots of RAM. I have seen really simple apps using about 50MB of RAM, which is the same amount of RAM you could run an entire PC OS in the 1990s.
My laptop where I do run several applications at once and also occasional spin up a VM doesn't even have 12GB, yet I have not found the need to upgrade its RAM.