I assume that they are simply so abundant in resources, they easily reached a Star Trek Earth-like level of utopia.
Team Rocket steal because they are greedy, not because they are hungry.
Unless Soylent Green is made of people, I don't think anyone in that society is too poor to live.
Consider that most people are apparently free to move about on their own and do whatever they feel like.
And that trees can bear fruit in a single day or less! It's an obviously fertile land.
Ah, now I have a number of ExtremeSpeed Dratini, in case I want more of them for some reason.
I like Ho-oh's sprite in this game. The talons look cool. Took some time to catch. My Feraligatr happened to be exactly the same level as Ho-oh.
Also, Tangela!

I haven't tried to raise a Tangela since Blue.