"Companies respond to customer demands. If we support them with our purchases, they will support us with their offerings. If we look for the cheapest deals and order online, we shouldn't be surprised if they close their doors. It's us, not them."

Thats exactly the wrong way round in my book, and how do I give them business when they don't stock what I want. If Jessops want business from people carrying out film photography, they have to first demonstrate that they are worth it and to provide some sort of incentive not to buy on the internet/phone. Their failure to hold adequate stocks, failure to employ and train decent staff so they can converse sensibly with a photographer, and a decision to offer competitive prices only where a potential customer first finds a better deal elsewhere speaks volumes for their intent. If they can't be bothered then I'm absolutely right to give them as little business as possible.