I am not using any other crypto currency at the moment, but I don't think any of them will ever overtake bitcoin. Its the standard of all, its like money now, do you see money competing with anything else? I really don't see that. So I feel bitcoin will hold it own in the market and would probably keep growing.
Yes of course Bitcoin has no competition in the virtual currency society. Bitcoin is most accepted crypto currency. Many developed countries like japan Germany work with Bitcoin. It is also accepted in many country in comparison to other crypto currency. Bitcoin's Blockchain technology make it different and popular among other crypto currency. Bitcoin's price is a another factor which makes it unbeatable. Bitcoin is also accepted by many multinational company like Microsoft Amazon etc. These thing show that it has no competition. 