We have a number of product decisions to make about how we do things, so the design center of Stripe Atlas is Internet companies. If one incorporates e.g. a Delaware LLC through Stripe Atlas, that’s an LLC. LLCs can e.g. own apartment buildings. We generally assume you probably won’t use us to form an LLC to own and operate an apartment building. There is, at present, no plan to have an Atlas meetup to swap tips on finding great exterminators. But if e.g. you sell SaaS, we have a lot to say about selling SaaS, and your peers in Atlas will run businesses similar in character to yours.
Many Stripe Atlas companies sell physical products; most of them are technically-enabled or sold over the Internet. If we were hypothetically not able to support a product business, it would not be because it is physical, it would be for one of the reasons on the link above.