I disagree because there will come a day in the future, however distant it may or may not be, that folks of all classes will have affordable access to space tourism, and most folks (read: the non-rich) do not need to be taxed any more than they already are.

Now, taxing those who own space tourism is something I can get behind. Tax them for the pollution they generate for fueling their rockets. Tax them for any space debris they generate. And tax them for simply existing in the first place.