Thanks to the success of The Witcher 3, I wouldn't call CDPR an indie dev anymore. I'm sure porting that game wasn't easy, but it had a well resourced studio behind it. Not all games can even make the tradeoffs that were necessary for it to work, though. Factorio, a 2D game, also made by a pretty competent but still indie developer, was ported to the Switch, but its expansion pack Space Age couldn't be.