You may be both right.
Although the days of Bitcoin monopoly are over, it will remain strong because of its established model, and also because of emotional attachment to the brand.
That's why there is such a vigorous fight over the status to be 'the Real Bitcoin'.
There are a lot of new techs that have emerged in the landscape, and as time passes they diverge increasingly from the original prototype. There is now a diversity of propositions and experiments.