The lack of targets right now is due to the dp timer reset from the uw. It is not impossible to survive as collective; however, it is rather difficult to be collective if you cannot check the ranks many times throughout the day.
It takes time to set up the initial few fights out of NP (buying minerals and ore), quite possibly more challenging than other races, but not significant on RT.
The only real challenge with collective is trying to find 2+ people out of dp in a PR range where you have a reasonable amount of time/turns to attack both. Collective has powerful ships versus a.miner and terran. Ship upkeep scales very well with the economy, and the build rate keeps collectives in check.
When you first start out as collective (I admit I feel into this mindset when I started collective), you might think "this is so hard. collective needs balancing/buffs," it is not really the case. Once you get your empire set up, it is smooth sailing. If you don`t want to be active, it is really easy to refresh your dp. You see a terran or a.miner out of dp? You attack them, almost always get 3 borders, and wait for someone to put you in dp.