While Hasbro owns WotC, they will never abandon physical products, or even transition so that the "lead" products are digital. Physical products are still the backbone of Hasbro and they have been extremely wary of digital products since the late-90s when they almost went bankrupt after investing heavily into digital gaming.
Even now, they don't understand the digital space well enough. D&D Beyond is the biggest digital success they've had in years, D&D or otherwise.
mmm, no, that would be MTG Arena. D&D Beyond isn't an in-house project, and MTG being MTG is way a bigger phenomenon worldwide.