This. I built a cross platform app. You pay the yearly dev fee to apple and you can sign your apps for macos in and out of the store. MS do let you do signing for their store, but for outside distribution you need EV certs that are very expensive and a pain to manage. For a small business it's probably fine but for a solo dev it's really shit. And yeah, it flagged one version of my installer as a virus leaving me scrambling and anxious thinking my build could have been compromised and then oh no it's just based on predictive ml and it's actually fine.