I'd add that if you intend to maintain a web site then adding support for apps (presumably multiple since cross-platform is still hard) then you are throttling your bandwidth to actually improve features and stability. I'm thinking of certain food delivery app that had enough bugs on their Android app, then I fell back to their mobile site and haven't looked back. They could have saved themselves probably a few million bucks and just kept their mobile site looking spiffy.
I feel exactly this way about a certain image sharing site. After numerous bad experiences with their app, I went back to their mobile website and found it fully functional. For some reason, copy and paste didn't work in the app, which is unacceptable in a community based on copying and pasting cat image URLs.
