Life is a test!
Today's entrepreneurs are looking for ways to test new ideas as fast as possible. This means that the implementation of these ideas should be tested as fast as possible. I believe that this is one of the reasons to have a good test automation system, especially in big organizations with complex systems.
Lean Startup book is a classic with lots of ideas that has influenced many for years. One of the most influencing of them for me was "Validated Learning". The writer says that you should validate your learnings empirically. Because learning can be a good cover for failure, you should validate your learnings with numbers.
In today's fast evolving world, ideas must be put in front of the customers as soon as possible, to be able to start getting the numbers and validate everything you think about the product and the customers. And if your test automation system is not covering all of your critical scenarios, you'll find it hard to convince others in your organization to go online fast. Endless regression and security tests will defer the date to go to live. Because the feedback from the first version will definitely require changes, it will also take a long time to put v2 of your product to live.
So it's all about testing, and doing it fast, and secure, and again and again.. I believe that a good DevOps and test automation system is getting more and more significant to evolve your business fast.