They're doing decent enough already for consumer electronics. Corsair is selling 16GB 6000MT/s CL36 DDR5 sticks in China using memory from CXMT: https://www.tomshardware.com/pc-components/ddr5/chinese-memo...

How long would it take an aggressive company to expand production capacity? I always thought it takes a few years, at minimum, for even established players to stand up new fabs

I guess we can't bit these yet. I've been thinking about upgrading my ram for my laptop but it's like half the price of a new laptop lol