Incidentally, I think the first consumer devices to adopt RISC-V will be home wireless routers, because the stock firmwares for those are closed, so they'll just need to be recompiled with a new toolchain. And those devices don't need a GPU.
I don't think we'll be able to compete with Intel's x86 chips for a while. Mostly because Intel's silicon processes are more advanced than those offered by other foundries.
From Wikipedia:
> The RISC-V authors aim to provide several freely available CPU designs, under a BSD license. This license allows derivative works such as RISC-V chip designs to be either open and free like RISC-V itself, or closed and proprietary, (unlike the available OpenRISC cores, which under the GPL, requires that all derivative works also be open and free).
https://en.wikipedia.org/wiki/RISC-V
So if it's not GPL, such as OpenRISC, then it's not guaranteed to be fully open source. You could still have 99% of the chip as open source and the other 1% as the proprietary backdoor.
(Which, of course, means that no sane manufacturer would touch GPLed hardware designs.)