A lot of what you said was blatantly wrong. Original Gameboy carts were compatible with everything up to the NDS. Each new system up to that point only expanded compatibility.
In fact, backwards compatibility was one of the largest selling points of each new Gameboy generation. No need to ditch your old game library, you can keep playing them with the new console. No need to worry about carrying multiple consoles around, cuz the newest console always plays your current library on top of expanding compatibility. You could slam an original copy of Tetris (which came bundled with the original GameBoy) into a DS, and it would boot up just fine.
The first time they dropped backwards compatibility was the DSi, which didn’t have a gameboy port at all. IIRC the GameBoy Micro also didn’t support anything before the GBA, but it released around the same time as the DSi, so most players just ended up using their NDS to play anyways.
Then the 3DS was fully compatible with the NDS and DSi (at least, what few games actually existed for the DSi) library.
A lot of what you said was blatantly wrong. Original Gameboy carts were compatible with everything up to the NDS. Each new system up to that point only expanded compatibility.
In fact, backwards compatibility was one of the largest selling points of each new Gameboy generation. No need to ditch your old game library, you can keep playing them with the new console. No need to worry about carrying multiple consoles around, cuz the newest console always plays your current library on top of expanding compatibility. You could slam an original copy of Tetris (which came bundled with the original GameBoy) into a DS, and it would boot up just fine.
The first time they dropped backwards compatibility was the DSi, which didn’t have a gameboy port at all. IIRC the GameBoy Micro also didn’t support anything before the GBA, but it released around the same time as the DSi, so most players just ended up using their NDS to play anyways.
Then the 3DS was fully compatible with the NDS and DSi (at least, what few games actually existed for the DSi) library.