Why Traditional VCs Keep Getting Defense Tech Wrong

Sand Hill Road has tried defense tech three times now. After 9/11, during the mid-2010s drone wave, and the current cycle driven by Ukraine, China, and the AI arms race. Each time, the same pattern: excitement, capital deployment, confusion, and write-downs. The firms that figure it out do well. Most do not.

The core mistake is applying SaaS metrics to defense businesses. A SaaS investor looks for monthly recurring revenue, net revenue retention, low customer acquisition cost, and short sales cycles. Defense technology companies have none of those characteristics in their early stages. Revenue comes in lumps tied to contract milestones. Sales cycles are measured in years, not months. Customer concentration is extreme -- often a single government agency represents 80% or more of revenue. Churn is not a metric because contracts have defined performance periods.

The valuation frameworks break too. A SaaS company trading at 15x ARR has a clear growth trajectory that justifies the multiple. A defense company with $5 million in contract revenue and a $50 million pipeline does not map cleanly to the same model. Is the pipeline real? Government pipelines are notorious for slipping right. Will the contracts be profitable? Cost-plus and firm-fixed-price contracts have completely different margin profiles. How sticky is the customer? Recompete risk is real and unpredictable.

Board governance creates friction. VC board members accustomed to SaaS companies push for rapid growth, aggressive hiring, and market expansion. Defense startups that grow too fast ahead of contract revenue burn cash and die. The pacing is different. Hiring ahead of bookings in defense is not bold -- it is reckless. The best defense tech companies grow in lockstep with their contract base, not ahead of it.

The firms succeeding in defense tech have partners who understand the acquisition process, have relationships in the DoD and IC, and can help portfolio companies navigate the gap between a prototype and a program of record. They underwrite to contract pipelines, not just ARR. They structure deals with longer time horizons and different return expectations than a typical SaaS investment.

Andreessen Horowitz built a dedicated defense practice. Lux Capital has decades of deep-tech experience. Shield Capital was founded specifically for this market. These firms get it because they restructured around the reality of defense technology instead of forcing defense companies into a SaaS-shaped box.

The opportunity is real. The capital is flowing. But the returns will concentrate in the hands of investors who learned the market, not the ones who assumed it worked like everything else.