What other options are there?

I am not being snarky. In my head any and all SaaS plays are inherently international. Perhaps that's because I am Slovenian and any endeavour that is not international by default is doomed from the get go.

I could not imagine a SaaS story that is viable in mid to long term without inherent internationalization. Except perhaps US based companies, however there WILL be trouble as soon as you try to enter European market if you assume that US is the world.