Thank you for your feedback.
From the technical point of view, it is really easy to add a low-cost version with
advanced features, but the problem is with the cost of the customer support.
Advanced features, such as services, command line tools, customization capabilities,
databases, etc. require much more customer support, approximately about 4 times
more than a regular GUI application and therefore licenses for these products and
much more expensive.
For example, last Friday a company asked to help to resolve an issue with DiskPulse
Server configuration, which took us half a day to fix.
It is true that we have our own problems, but frequently issues we need to solve
are related to customer's storage and servers configuration, user accounts, etc.
So, in general, you can put on a web site a very best product version including
all advanced features, but once it is online, customers will use it and you will have
to support it (both development costs and customer support costs) with the
amount of resources you have.