Minecraft Switch 2 edition

Why is it that us on the switch 2 have to buy the game again because we prefer to have a physical game this is so unfair!! We litteraly are playing the same game as everyone else but can't get the update and it's not like you can't make it happen since other games have done it like the zelda duo that if you have the game in cartridge you can play the switch 2 version i mean it is a payed upgrade but that's your chance to one up nintendo prove us that money isn't everything