You can value anything in anything. You can value cars in bananas if you'd like, and I'm sure some people will try that for as long as we have freedom. But money is a network good and its not useful or practical to value things in a worse money that less people use. Bitcoin is the best money and once most people use it, it will be the standard for value. And then once everyone else sees how much their other shit is losing value against Bitcoin, we will have a true Bitcoin standard.