Is Polkadot successful?

Could you please elaborate on the success of Polkadot? I've heard a lot about its potential in the cryptocurrency space, but I'm still trying to wrap my head around its achievements. Does Polkadot have a solid user base? How is it performing in terms of scalability and interoperability? And importantly, what kind of impact is it having on the broader blockchain ecosystem? I'm curious to know if Polkadot has met its initial goals and if it's poised for continued growth in the future.