There is nothing preventing that. And Hasbro doesn't care. What they are doing is trying to prevent folks from making a D&D video game or 3dVTT without their permission. I think that is a reasonable goal, and agree that the language around this is not yet clear.
On what basis do you accede to Hasbro's corporate demand for "clarity" concerning this? Have you thought this through?
The OGL 1.0a extended to software for 23 years. WotC was well able, during the whole of that time, to license a number of Dungeons and Dragons games in the marketplace. I think we can agree that there is an abundance of evidence that in order to conduct commerce and license its Brand in the marketplace, no further clarity or retraction of the OGL 1.0a was necessary. The following is a
partial list of D&D licensed computer/ video games published during the period of time when the OGL 1.0a's application to software - including computer games - was in place and beyond doubt:
Icewind Dale
Baldur's Gate II: Shadows of Amn
Icewind Dale: Heart of Winter
Baldur's Gate II: Throne of Bhaal
Icewind Dale: Trials of the Luremaster
Pool of Radiance: Ruins of Myth Drannor
Baldur's Gate: Dark Alliance
Neverwinter Nights
Icewind Dale II
Dungeons & Dragons: Eye of the Beholder
Neverwinter Nights: Shadows of Undrentide
Neverwinter Nights: Hordes of the Underdark
Forgotten Realms: Demon Stone
Neverwinter Nights: Mobile
Baldur's Gate: Dark Alliance II
Neverwinter Nights: Shadowguard
Neverwinter Nights: Witch's Wake
Neverwinter Nights: Kingmaker
Neverwinter Nights: Pirates of the Sword Coast
Neverwinter Nights: Infinite Dungeons
Neverwinter Nights: Wyvern Crown of Cormyr
Neverwinter Nights 2
Neverwinter Nights 2: Mask of the Betrayer
Dungeons & Dragons: Tiny Adventures
Neverwinter Nights 2: Storm of Zehir
Neverwinter Nights 2: Mysteries of Westgate
Heroes of Neverwinter
Dungeons & Dragons: Daggerdale
Baldur's Gate: Enhanced Edition
Neverwinter MMO
Dungeons & Dragons: Arena of War
Baldur's Gate II: Enhanced Edition
Icewind Dale: Enhanced Edition
Lords of Waterdeep
Sword Coast Legends
Baldur's Gate: Siege of Dragonspear Baldur's Gate
Idle Champions of the Forgotten Realms
Neverwinter Nights: Enhanced Edition
Warriors of Waterdeep
Dungeons & Dragons: Dark Alliance
Baldur's Gate III
But WotC has a legitimate commercial interest in clawing back the applicability of the OGL 1.0a to software? Really? REALLY?
No, not really. I put it to you that you have not carefully thought through your position on this matter. This isn't about the reasonable commercial interest of WotC in dealing with licensees who produce computer and video games in the marketplace. This isn't about that at all. The above list tells you all you need to know about the evidentiary basis for making that claim.
No.
This is about WotC EXCLUDING others from making a VTT to play 6e. This desire exists now solely because in the near future WotC wants to sell a VTT product via subscription. Because it is a subscription product, they want to grant themselves an exclusivity to that play space that has not existed at any time in the past, so as to play a game using remote software with other humans using RPG rules. They want this exclusivity because otherwise, people might not buy their VTT because of the strength of its features and benefits,
but simply because there is no available alternative. That's acting like a monopolist when it comes to using the rules of RPG play online.
"You can have a VTT, but it can't be too good".
That's why we are
really here about all of this OGL nonsense; there is no other commercial reason. The rest is "extra" and details.