Poway is fifty thousand people built around aerospace, defense contracting, and the manufacturing that orbits both. Most of that work is service and contract, not retail, so the honest read is that ecommerce is a narrow fit here. But narrow is not none. Inside that base sit the operators who do ship product: a small manufacturer with a line of parts or kits that engineers reorder, a fabrication shop selling a branded tool or fixture, a family business that built a following around one physical thing and keeps fielding "can I just buy it online" emails.
Those operators rarely need a marketplace. They need a clean way for a known buyer to reorder a known part, or for a new customer to buy the one product without a sales call. Drop that into Shopify and you're renting a consumer-retail platform to do a job it was never shaped for: variants you don't have, a theme that screams boutique when the buyer is a procurement person with a card, monthly fees on top of the processing you'd pay anyway.
Stripe-direct fits the actual shape of the work. Stripe moves the money. The catalog, the reorder flow, the part-number search, the net-terms note if you need one, the receipt that doubles as a record for the buyer's books: all written around how Poway operators actually sell. You pay the processing fee and nothing else. No platform layer skimming a business that already runs on tight margins.