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[Supah]

The way I look at it by now is this. Say you own a business and one of your suppliers is developing a new product. You intend to buy this product however in order to use it you will need to invest in new tooling and machines for your process. That supplier however keeps missing deadlines and fails to communicate with you time and time again about the fact that he is likely going to miss a deadline, why he missed a deadline and has left you in the dark about the status of the product for years now. He's show you a couple of pictures of nuts and bolts but nothing substantial like a video of the machine in operation. When asked about updates he tells you he will show you something "In two weeks" or "Next monday" but those also come and go without them ever reliably coming up with the goods. Meanwhile other products from different manufactorers are coming out or are making important deadlines. I don't think such a supplier should be surprised to lose your business all together or atleast see a strong decline in people willing to use his product. Don't make promisses if you know you wont be able to keep them, it shows contempt for your users.