[randomtwiddler]

The web browser is the least closed most open distribution for software services ever. Anyone anywhere can publish and billions can access it without numerous gate keepers in the way.

It isn't the only solution out there. You can publish to the various app stores and abide by all their rules and regulations and upkeep requirements.

You can be confined to Linux desktop.

You can still get to the desktop via your own distribution. You can also side load Android and avoid the store.

Browser apps are, by far, the easiest.