I agree. It will be hard to fork Bitcoin and become the most valuable fork without a supermajority of consensus. I'm talking way more than 50%... maybe 80%-90%+
Since Bitcoin is so big and so valuable, it makes it even harder to garner consensus.
This makes bitcoin more valuable as money. Who would want to invest in a money long-term where the properties could be easily changed overnight?It's not only the properties, but the risk of bugs or security vulnerabilities due to carelessness.
That's what makes me laugh about Bcash. Bitcoin could literally increase the blocksize and Bcash would become even more irrelevant than it is today because, what the fuck else does it have? Some shady con men running the marketing department? LOL.
I agree that if Bitcoin raised its block size to 8Mb it would kill the value proposition of Bcash. The money in Bcash would flow back to Bitcoin.