Despite 70% of top law firms licensing AI tools like Harvey, daily usage is low. The billable-hour compensation structure creates a powerful disincentive for lawyers to adopt efficiency-boosting AI, as it directly reduces their billable time.
Unlike traditional firms that bill by the hour, personal injury attorneys on contingency fees are highly motivated to adopt AI. Efficiency gains don't reduce billable hours; they directly boost profit margins by settling cases faster and with less manual work, creating clear and immediate ROI.
Contrary to expectations, professions that are typically slow to adopt new technology (medicine, law) are showing massive enthusiasm for AI. This is because it directly addresses their core need to reason with and manage large volumes of unstructured data, improving their daily work.
While law firms have an inherent conflict with AI due to the billable hour model, the push for adoption is coming from their clients. Corporations are now sending formal requests to their legal counsel, requiring them to use AI tools for efficiency and cost savings, thereby forcing the industry to adapt despite its traditional economic incentives.
To penetrate tech-resistant markets like personal injury law, the winning model is not selling AI software but offering an AI-powered service. Finch acts as an outsourced, AI-augmented paralegal team, an easier value proposition for firms to adopt than training existing staff on new, complex tools.
VC Keith Rabois highlights a core conflict: law firms billing by the hour are disincentivized from adopting AI that makes associates more efficient, as it reduces revenue. This explains why corporate legal departments are faster adopters—their goal is to cut costs.
Measuring AI's value by hours saved is misleading for law firms, as it can imply lower revenue. The true ROI comes from what lawyers do with that saved time: pursuing more complex strategies, conducting deeper analysis, and spending more time with clients—high-value work previously constrained by time.
The most durable AI applications are those that directly amplify their customers' revenue streams rather than merely offering efficiency gains. For businesses with non-hourly billing models, like contingency-based law firms, AI that helps them win more cases is infinitely more valuable and defensible than AI that just saves time.
AI legal tech startup Eve targets plaintiff lawyers because their business model (a percentage of the win) is directly aligned with AI's efficiency gains. In contrast, defense firms, which rely on billable hours, face a structural disincentive to adopt tools that reduce the time spent on tasks.
A major barrier to enterprise AI adoption is IT treating licenses as scarce resources, parsing them out one-by-one. This creates long queues for eager teams, even those with clear ROI use cases, which stifles grassroots experimentation and kills momentum before value can be proven.
AI tools drastically reduce time for tasks traditionally billed by the hour. Clients, aware of these efficiencies, now demand law firms use AI and question hourly billing. This is forcing a non-optional industry shift towards alternative models like flat fees, driven by client pressure rather than firm strategy.