According to statistics, 65% of startups that receive funding die or do not bring any profit to their investors. Most startups die, one-third of them bring back some money, and most of the money comes from the top 5% of startups that go through the roof.
The main task for the investor after writing a check is to figure out which startup belongs to which group. It would be best if you stopped wasting your time and effort on those startups that belong to the bottom 65%.
Oddly enough, most investors do the opposite. They begin to spend more time and effort trying to help those who fail. Although it would be better to devote this time to those who succeed in getting them to fly even higher.