If a project has promised you something in terms of a product which isn't what was initially promised it is either a scam or they couldn't keep their promise in creating what they had initially promised. Now, this would obviously disappoint investors and if they do want to profit for something they should've done proper research and saw other feedback before becoming invested as this is a common ordeal that projects fail or not meet standards while some succeed. There are a lot of factors that play a part in the success of a project.