When the internet was first came out there was a lot of big discussion about it. Its rubbish, it'll never work, its brilliant its going to change everything, its just a fad etc.
Not only that people thought it was rubbish. People were convinced that the internet won't be able to scale. Indeed, at the beginning of the internet, the infrastructure was weak to support even transfer of larger files. And today, we see live streaming of movies in high resolution.
I believe similar future awaits Bitcoin. Today, everybody is concerned about blockchain scaling. But hopefully, when needed, Bitcoin's infrastructure will scale similarly to the way internet did.