1C, who own MG, are one of Russia's largest software publishers (in business software and not just games). If they want to I imagine they could fund it forever.
I believe they could, but I do not think they are in the software branche for a charity cause, I even go as far as suspecting - God forbid' - an actual financial motive behind their activities. Now, CLoD sales been and gone, there is nothing more to be fetched out of it, there is no money to be gained "finishing it". What you are seeing is BoM development budget driving patching the CLoD as far as feasible (for BoM development) and that's it, so in this regard I would not make too much hopes for some additional CLoD specific content. Also,as I see it, they are also not in an immediate time pressure to deliver a patch, they need to have that duct tape fix for the engine about the time of the release of BoM, CloD customers serving conveniently as beta testers for BoM engine is just an added bonus...what matters more for BoM sales then, are the reviews BoM receives, not the level of customer satisfaction from CLoD purchasers

Whole thing has a flavour of Puzo's "Fools die", Oleg fitting the part of Osano the novelist...