IMO it is because so many people have a kind of sexual fetish of technophilia. They literally get off on new technology. It doesn't matter if it doesn't solve anything. It just needs to feel new and as if progress is being made. As long as it feels new and like progress the technophile will be happy to reinvent the wheel.

Even the word technophile has positive connotations as opposed to something deviant in our society. We don't even have a word for a deviant technophile , deviant over obsession with nonsense and "the next big thing".