Some of these features simply rely on our cloud environment to function. Live threads for example. In the case of those, its not something we can cost effectively develop for the self hosted environment. Others, it is of course an active business decision. As with any business, there are different levels of purchase you can make.
In terms of the marketplace, this has been discussed on many many occasions. It was simply a losing proposition for us as a company. We provided a marketplace for customers to find products that others sell, at considerable time and cost to us as a business. This wasnt something we were able to have continue.