Nothing can beat Bitcoin. There is no competitions happening here either. It is just a matter of how you invest your money. You have to think wisely. As Bitcoin is more valuable and most important kind of coin than etherium that When bitcoin rises, other coins also will follow.And the same thing when Bitcoin is fallen.
In next few years from now, maybe bitcoin still leader on market cap but we never can predict market movement in the future. Maybe in few years there is coin can compete with bitcoin on market cap value. But i am believe bitcoin is still investor favorite because its long term investment and have biggest liquidity