My answer to the principle is: NO
Bitcoin is money, the value of money is built on confidence, tradition and security, attributes that Bitcoin offers easily. The analogy between Bitcoin and social networks is completely incorrect, people think that Bitcoin is an myspace that will be replaced by facebook. It turns out that Bitcoin is money and not a social network, so this comparison is completely wrong.
Most of mankind's wealth resides in vaults for hundreds of years, so the circulating medium is derisory close to it. Why are we going to need fast, no-fee coins if we can use paper money and banks? Bitcoin's purpose is to be a safe asset, scarce and superior to gold. What is behind Bitcoin is the fact that no politician can steal you through taxes or inflation, there is nothing safer than Blockchain and Bitcoin. So far no technologically superior currency has emerged to Bitcoin to the point of provoking an abyss between technologies and will hardly emerge.
BUY BITCOIN TODAY AND ALWAYS.
We still cannot assure that thing if Bitcoin can be outdated or not by other existing currencies because we are all living in same place where change is inevitable so as possibilities are just open to come and happen with the presence of this changes that contributes or become the main factor why a single thing happens. We can never tell if it is possible that one day, Bitcoin will be surpassed by other existing currencies or not but we must keep on our minds that no matter what happen, we just keep on supporting what we think is the best for us. But do not think it negatively that Bitcoin can be outdated by other currencies right now because currently, it is on its peak so it is impossible for me right now.