Another question: is it mandatory to have a .com domain name? I kind of feel it is, because otherwise your customers will just go to the .com domain even though they might have been looking for you. Perhaps one exception would be if the TLD somehow is part of the name? But even then, I wouldn't be sure.

On the other hand it seems inevitable that in the long run people will get used to other TLDs, because not every valid business will be able to aquire a good .com-name.