This is constantly looming over your head and used to be something understood by startup employees before the era of zero interest free money and "startups are kewl".
Any money raised got spent, otherwise they didn't need to raise it.
The trade off to take on the risk of being underpaid and possibly soon-to-be-unemployed by a startup are the potential equity payoff, the work environment and the human-networking. And it's usually worth it because you're buoyed by the local startup community and the high chance you get another job with people you know tomorrow if things don't work out.
The problem here is that our industry is flooded with the types of people who would otherwise have become lawyers or finance people because they chase comfort and status as opposed to a desire to work on cool shit with cool people. It kind of makes me hope these conditions extend for a while to weed out the people who don't belong and we can get things back to relatively-normal.