What it really evolves down to is how can we put out the best product available. In other words, how can we keep up with everyone else. All of the other competitors have one version they work on. This has allowed some of the new ones to catch up very quickly.
It's true that I originally had no intentions of dropping the PERL version but I don't want this to lag behind other products and there is no way I can keep up doing both. We could throw more developers at it, but the one thing most everyone likes is the clean code and multiple developers working on a product usually doesn't make for clean code. Trust me, I work on a project like this in my day job and adding new things to it is anything but fun.
I thought by creating the PHP vesion along with the PERL version that I would get more customers and the community would grow. Didn't work that way. The same number of people bought but as before and it it basically split the community. Instead of everyone being able to focus on one, tracking bugs, features, etc. we had half on one side and half on the other.