I don’t think Airbnb was successful because there were no hotel rooms available, or that the problem with the taxi industry is that you have to wait. You have to wait with uber too.
I agree that many successful companies have iterated and improved on concepts that already existed rather than inventing something entirely new but your examples are off.
Netflix started as DVD rental company, and their streaming service was only introduced about 10 years later. If anything they were taking on blockbuster not cable providers.
I also find it interesting to give such definitive advice on how to become X without being X yourself.