Auraninja
Eh, ragazzo!
They couldn't because 3ds didn't have GBA on virtual console.Generally speaking, I don't personally see their appeal anymore. I was enthralled by HG/SS when those were released because my old copies of G/S/C no longer worked due to their internal batteries running dry, so having updated versions of the games for the DS was wonderful and convenient. But I wasn't as eager for OR/AS since I still owned the original Gen III cartridges, and I figured that if Nintendo had wanted to work the nostalgia angle, they could've just re-released Ruby and Sapphire on the Virtual Console for the 3DS instead of developing remakes that probably cost twice or three times as much as the Virtual Console versions might've costed. Then BD/SP happened, and now I'm very wary about the concept of remakes.
Before anybody counters with the ambassador program, those games don't work with traditional emulation.
The 3ds would shut down its features in order for the ambassador games to work.
They likely wouldn't be able to modify R/S/E or make it work with Bank.