Trust me, my business advisors told me that 99% coins at the moment all copied bitcoin source code and deploy it under their trading name with some trick tweaks, they know that most of investors lack of technical knowledge, investors are just interested in project ideas, white papers, team profile, awesome home page and easily get trapped by beautiful reports and faked numbers, demo videos. Coin issuers are indeed just those who do sale and marketing instead of making technical innovation. Their target is your money and increase bitcoin value they had. When you use bitcoin to buy their coins, bitcoin increases and when you need cash you have to convert their coins into bitcoin, because no bank and organization would accept their currency,  to sell out but the bitcoin price at that time is increased much higher and so we have new bigger bitcoin bubble