Bitcoin could have real competition, but it seems that most projects do not bring something really innovative, or choose the easiest way, like pre-mining, instamine and icos.
I think It's all standard, like money now, do you see money compete with anything else? I really did not see that. So I feel bitcoin will hold its own in the market and will probably continue to grow.
I do not use other crypto currencies at the moment, but I do not think any of them will take over bitcoin.