I agree. Unless you're still really young (like Chaeryeong was during Sixteen), there's really a basically zero percent chance of that company debuting another group you could get into. It's a way better option imo to take the risk and leave and hopefully end up debuting.
For example, BX and Seunghun from CIX were both contestants on Treasure Box that were eliminated. Both left YG for C9 and ended up debuting just a few months later.