It's about control and money. Nothing else.
Among the things that most affect Smiteworks and Fantasy Grounds are:
1) Wizards of the Coast is the one who defines what a VTT is for its competition based on a very vague description of replicating the experience of getting together with friends around a table to play D&D, but later they summarize it to be a replacement for a book + a space where a group meets + a calculator.
A VTT must be a virtual space that allows anyone to play a board game with digital tools, augmented reality, or virtual reality, whatever they are. Just like it is around a real table, where if I want to create a battle map, I can draw it, show an image or video on a tv, create one with miniature terrains or a shoebox, play with or without music, with ambient lights, or whatever the group wants and has at their disposal.
2) With the DEAUTHORIZATION of OGL 1.0a I think they are eliminating their biggest competitor for D&D ONE which is D&D 5e and I think that is the true intention of the new OGL. I think that nothing will be able to be published / developed for 5e and any other system that has been using any version of the OGL prior to the next OGL. I'm not even sure if these products can be sold in the future. Furthermore, the document mentions the obligations that any VTT or website has under the DMCA to remove them. If the document is approved as such, it seems to me that Smiteworks will be forced to remove any module or extension that uses the current OGL.