While enterprises might leverage AI to build custom in-house solutions, SMBs are highly resistant to the pain of switching core systems like point-of-sale. This inertia makes niche SaaS for SMBs more defensible against the immediate threat of AI-driven replacement.

The stickiest software is critical but inexpensive relative to a customer's overall budget, like payroll services. This 'Goldilocks zone' makes the software too small a cost for C-suite review, yet too embedded to easily replace, creating a powerful moat.

Disruptive AI innovations are counter-positioned against traditional seat-based SaaS pricing. Incumbents struggle to pivot because it would make them deeply unprofitable, spook investors, and require a complete cultural rewiring. This organizational inertia, not a technology gap, is their biggest vulnerability to AI-native startups.

As AI commoditizes user interfaces, enduring value will reside in the backend systems that are the authoritative source of data (e.g., payroll, financial records). These 'systems of record' are sticky due to regulation, business process integration, and high switching costs.

The "SaaSpocalypse" narrative misses a key reason large enterprises buy from vendors like Salesforce. It's not just about features, but accountability—like hiring McKinsey, it provides "air cover" and "a throat to choke." This institutional trust is a powerful moat against nascent, AI-generated tools.

Following the playbook of healthcare software giant Epic Systems, the most durable competitive moat in GovTech is to have your product's specific features and requirements written directly into state or federal law. This tactic makes your company an essential, legally-mandated vendor, effectively locking out competitors.

Large enterprises operate on complex webs of legacy systems, compliance controls, and fragile integrations. Their high risk aversion and lengthy change management cycles create a powerful inertia that will significantly delay the replacement of established B2B software, regardless of how capable AI agents become. Enterprise architecture moves slower than market hype.

The most defensible businesses, especially in enterprise software, create such high switching costs that customers are essentially locked in. This "hostage" dynamic, where leaving is prohibitively difficult, is a stronger moat than simply having satisfied customers who could still churn. It's the foundation of an enduring software business.

Despite the narrative that AI-native startups will replace legacy SaaS, frontier AI lab Anthropic is hiring a Salesforce admin. This "revealed preference" demonstrates the powerful lock-in, complexity, and scale advantages that incumbents like Salesforce still possess, even among their would-be disruptors.