The problems cybersecurity startups attempt to solve are often a bit ahead of the mainstream. They can move faster than most established companies to fill gaps or emerging needs. Startups can often innovative faster because they are unfettered by an installed base.
The downside, of course, is that startups often lack resources and maturity. It’s a risk for a company to commit to a startup’s product or platform, and it requires a different kind of customer/vendor relationship. The rewards, however, can be huge if it gives that company a competitive advantage or reduces stress on security resources.