That $130k/year makes trying a startup less risky. It gave them an opportunity to save so they can live off savings. It also means that they can recover quickly from any debt they incur.
It also establishes a benchmark for a startup's value creation. If early employees can't reasonably believe that they're going to get significantly more than $130k for their efforts, either the idea/execution is too small or the founders may not play well with others, which causes other problems leading to failure.