Lol, you really went looking for that old post of mine.
I think the facilities shouldn't be a problem. There just probably hasn't been anyone in the swimming community who wanted it as much as Anthony Nesty did back in the day. Because some of those olympic participants also train in the US.
It's all about determination and how much you put into it. Look at our determined cyclist making big strides, even though the government was putting less money in his activities at the beginning, not sure about now