If the bitcoin price is as stable as the US dollar, it will be very popular and the price will be over many thousands.
For me it is not going to be popular if bitcoin is going to have a stable price at all. The investors wants the characteristic of bitcoin that way.
They are referring to the unstable price of bitcoin, because a lot of opportunities they can get with it that's why more and more investors are getting
into bitcoins because of unstable price.
If thats the case when bitcoin has already a stable price may large holders of bitcoin would sell all the bitcoin on their wallets and change it to fiat. You are right investors love the way of bitcoin of its volatile characteristic which they prefer to gain some profits out of it.