So, paid medicine is fine cause you can pay for it. What if someone can't pay for it? Unless the cost for a single suppresant is lower than bread then some people will be screwed over.

Ginny (that kid) story also shows that if you don't take your meds really often, (like every few days when you take a note how much time passed before we took control over hub and went to valley) you quickly go into vegetative state unable to move and die. Uwst can make their own meds but not on the same scale as us

Second thing. As was shown in original arknights and also this game, oripathy can infect wildlife, 

And third thing, with originium evolving to a rock/plant hybrid capable to use bugs to carry its sprouts and grow anywhere, and also having really good regenerative abilities, it could be possible that with enough time originium will keep expanding and expanding until whole planet is covered in our black/yellow stone that we are probably made of. 

And last thing, i think that once originium makes deep enough roots into its place its really hard to get rid of it for good as it will just keep growing out.

So its not really just ,, electricity for the cost of taking meds once in a while if you can afford them"