how will that pan out over the long term is really unclear and the reality is performance is actually catching up quickly
You cannot buy the company backing RISC-V to take out the competition. And if a RISC-V company stumbles, the ecosystem carries on. But if even one RISC-V company is in the right place at the right time, RISC-V can surge ahead. It is hard to imagine it does not dominate eventually.
You get these kinds of responses when something is too close to perfection. It suddenly gets judged in a much different light.
But I also think this is an example of a slight disingenuity in RISC-V being referred to as open-source. It's borrowing the clout of open-source software projects where the end user has the freedom to compile them at home. I can't fabricate a CPU at home, I'm still beholden to whatever patents the manufacturer chooses to license. SiFive have a >billion dollar valuation, for a business based on selling licences.
Nowadays nobody will want to work on foundational open source work for free only to enrich everyone else that builds on top of it.
What you're less likely to get is the consumer level PC and Laptop systems, as you'll need one large company to set the standard and others to adhere to it. So you could feasibly compile a program for a certain level of RISCV chip and have it run on many vendors processors. As it is there's several companies trying to push ARM for some sort of high end consumer PCs/Laptops but they all require different OSes and the chips aren't equivalent, so you have to compile software separately for those different platforms.