This is one reason why it's better to have lots of small clients than a few big clients, because over time, the few big ones will increasingly dictate your product strategy in ways you will not want to go. Jason Fried from Basecamp has a good article about this [0].

[0] https://www.inc.com/magazine/201206/jason-fried/huge-account... (Archive link: https://archive.is/IHmwL)