[la_fayette]

The advanced features seem to be a good protection. Also the cost ist quite low, if you competing in the same market could you offer the service cheaper? I guess not. Moreover it is critical software for small businesses, I think many would pay for long term support on the original software...

[berkes]

Whether you can offer open source software cheaper, depends a.o. on scale.

Which is what AWS used to outprice elastic and redis.