Anthropic is engaging in some product engineering to level set their offerings against each other.
I'm not sure I am understanding the connection you are trying to make.
Uhhhh... that seems like quite a logical leap. "The only reason Apple doesn't release a faster phone is so other companies can't copy it."
Antitrust generally does not compel companies to make product lineup decisions, especially if the industry itself is acting quite competitively.
There is no legitimate purpose to restrict the ability to optimize accelerator kernels except to inhibit competition in this space-- it is the most benign and harmless act imaginable. There is at least some debate to be had about things like computer-security capabilities, but nothing is being damaged by AI inference being made 10% faster except the ability of market leaders to extract rents.