My question is, what prevents competition from just rolling out multiple competing currencies. I understand, once a currency is adopted.. its "brand" and popularity keeps it king. But, physically speaking, can the exact same BTC system be copied and altered... ? I assume so, we have Litecoin.. Feather coin amongst others.
There is nothing that prevents any 14-year-old kid from creating their own currency to compete with bitcoin. However, this has already been tried a hundred times and still nothing has come close to competing with Bitcoin. Nothing has even come close to competing with #2 Litecoin.
Even a payment system backed by major investors (Ripple) has gone nowhere.
I'm not saying that it isn't possible for another currency to compete. I'm just saying that the fear of an infinite number of competing currencies is unfounded.