It's an idea that made sense back in 2012-14. It looked like D&D had struck out big time, from Hasbro's corporate point of view, and there was a legitimate fear it would be withdrawn, possibly for decades (which, for some of us, would be, like, the rest of our lives), that 5e was a last shoestring attempt to keep it on the shelves.
Then boom, 80s come-back, D&D flies off the shelves, boom, pandemic, VTTs finally take off - sky's the limit.
It's only in context of the idea that, maybe, print books will be falling by the wayside in favor of a subscription VTT model, now that VTTs actually work and have acceptance, that it makes any sense at all, today.