basically how I laid it out.
Slowly increase the ‘pressure’ by having more digital exclusive content (beyond adventures and monsters, have some subclasses, have some tie ins like with Vecna), and keep increasing the price gap between print and digital. Further down the line have some APs in digital only. That is all fully in WotC’s control.
The part that is less in their control but equally relevant is to offer a superior experience over print in DDB and a VTT that is so ahead of the rest that it itself draws people away from print and into the VTT as the D&D platform of choice for a large majority of their customers.
Keep at it until demand for printed books is small enough to consider phasing them out and then decide whether to and how to go about it.
Will it work? Not sure. To me it can and I do not really see them getting there any other way.
You can argue they won’t succeed, you can argue they will not even try. My bet is on them trying and I believe they also have a decent chance at succeeding