Why IoT got stuck

Why is the adaptation of #IoT going so slowly? Over the past few months I came across many articles on my LinkedIn feed regarding this topic. Some people think that it is because of expensive cellular modules. Some people believe that there is a need for more maturity and interoperability if it comes to connectivity methods, communication protocols and IoT platforms. And some people think that it got stuck because there is no clarity about data ownership. There is some truth