I'm glad Google has published an open source firmware, and I hope that people will be able to independently verify that the hardware they use is genuinely running that firmware. Then I hope that hardware with such guarantees is not discriminated against by RPs.
The important difference with the CA ecosystem is that (in the worst case) the big platform owners can put pressure on small websites to obtain a certificate from one of a large number of competing issuers. Significantly, these issuers are not the same as the big OS providers themselves, and there are issuers who issue certificates for free. That is completely the reverse of 3 big platforms forcing end users to buy hardware, and those platforms being hardware vendors themselves.
> You’re the guy saying, “if we find a way to lower global temperatures, we should fear an ice age.”
No, I'm the frog saying "Hey, isn't this water getting a bit warm? Don't you think we should jump out before it's too late?"