It's not technically possible to just slap on more RAM. GDDR6 is point-to-point with option for clamshell, and the largest chips in mass production are 16Gbit/32 bit. So, for a 192bit card, the best you can get is 192/32×16Gbit×2 = 24GB.
To have more memory, you have to design a new die with a wider interface. The design+test+masks on leading edge silicon is tens of millions of NRE, and has to be paid well over a year before product launch. No-one is going to do that for a low-priced product with an unknown market.
The savior of home inference is probably going to be AMD's Strix Halo. It's a laptop APU built to be a fairly low end gaming chip, but it has a 256-bit LPDDR5X interface. There are larger LPDDR5X packages available (thanks to the smartphone market), and Strix Halo should be eventually available with 128GB of unified ram, performance probably somewhere around a 4060.
To have more memory, you have to design a new die with a wider interface. The design+test+masks on leading edge silicon is tens of millions of NRE, and has to be paid well over a year before product launch. No-one is going to do that for a low-priced product with an unknown market.
The savior of home inference is probably going to be AMD's Strix Halo. It's a laptop APU built to be a fairly low end gaming chip, but it has a 256-bit LPDDR5X interface. There are larger LPDDR5X packages available (thanks to the smartphone market), and Strix Halo should be eventually available with 128GB of unified ram, performance probably somewhere around a 4060.