It's not justifiable frrm a lore perspective IMO
But I couldn't care less about lore
How is it justifiable from a gameplay perspective? if you run out of room for building factories (which is currently an actual issue) and are wasting economy why shouldn't you get to use it?
In the carrot or the stick paradigm I haven't seen the game use the carrot once. it's always the stick. always the goddamn stick.