I'd say you should talk to an attorney. I'd want a more specific letter of intent or NDA covering your startup in case they decide to play in the space. Letti

I'd say you should talk to an attorney. I'd want a more specific letter of intent or NDA covering your startup in case they decide to play in the space. Letting them get to far into the technical due diligence before they have committed to something seems like a bad idea to me. They may be large and reputable, but that doesn't mean they won't steamroll a small company to get into a market they feel is compelling. Trust your gut, your asking the question because you have doubts as to their intent. So make them spell out their intent clearly. If they walk away, you know they never had a genuine intent, other than to steamroll you and pay you as little as possible, if anything.