Maybe you are right and the companies do want to pay and not worry about these problems. But now they have a lot more SaaS options to chose from. The incumbent companies like Salesforce and Atlassian have less of a moat. Maybe they'll keep the power users but if a customer is only using 80% of the feature set there is new competition.
Competition might come in the form of a startup but it can also come from existing SaaS companies expanding into adjacent domains. Canva now does docs. Notion does email. etc