Sure, and there are more people with that access than just AMD, ARM, NVIDIA, and Intel.
If game devs supported RISC-V, Valve could've made the Steam Deck without having to get AMD's help, which means they would've had more options to keep prices down while meeting their performance goals. Likewise for server vendors, phone manufacturers, etc, who currently need to buy from ARM (and fab themselves) or AMD/Intel.
And that's why I mentioned 3D printing. Making custom 3D models of LEGO pieces is out of reach for many (most?) and even owning a 3D printer is out of reach for many. I have one, but I've only built a handful of things because it's time consuming.
As it gets more software support, we should see a lot more variety in RISC-V chips. We're not there yet, but we should be excited because it's starting to get traction, and the future looks bright.