I have experience with this. We started a company based on a product written in C#, and were acquired by a company by a company whose product was predominantly

I have experience with this. We started a company based on a product written in C#, and were acquired by a company by a company whose product was predominantly written in Java. It was never really a concern during the acquisition. The software world is so diverse now that you could never predict who would be interested. If you ended up writing your product in a JVM language, you may end up with a Ruby suitor, etc. It's always best to just use the tool that you'll be most productive with, and will result in the best product.