They earned a lot. Some people have a limit how much they need to last fro their life time. For people that were in Bitcoin early that is not that hard really. Now is many more exchanges for them to compete with.
They earned a lot but i think that's isn't a good reason to close a business, if the business is good and they can make more money with it, they should keep it.
Bought my first bitcoins at virvox, back in the run to 160$. Good times.
Thos old times my friend, i remember them too, and miss them a lot XD