Honestly? 100%
Whenever they've been able to offer backwards compatibility, they've offered it. Same as Sony and Microsoft. Unless there's some drastic change in architecture, concept, or cartridge format, it's basically guaranteed
Considering how well remasters did on the PS4/XB1, for Sony's own games as well, like The Last of Us, they could've also just not bothered to offer backwards compatibility with their next systems but they did. Never mind that Nintendo didn't deliberately limit backwards compatibility from successful systems like the Wii, DS, GB/GBC, and GBA. Not to mention, the Wii U sold so badly that its games had their sales potential handicapped whereas the same doesn't apply for the Switch so there wouldn't be anywhere near the ROI with Switch ports as there are for Wii U ports