If I spend $10,000+ on a time piece, I expect it to be an heirloom I can pass onto my children. Only way I'd buy a gold AppleWatch is if I were able to upgrade the innards for every generation for a reasonable price of say $350-500 (i.e. the cost of a new AppleWatch, or simply exchange the old model for a new model for the same price.) As it stands this is a watch for people for whom money is no object.
Those people wont be buying one either. They will buy the 150k rolex encrusted with diamonds. When youre filthy rich you dont need siri as your personal assistant, you will pay a human to do everything for you.