Bitcoin's price is flying and rising with rocket speed.. i think bitcoin will survive always as the leader while it may have competitor but i think bitcoin is the most expensive and most well-known coin in crypto currencies. So it will stay as it is..
With the bitcoin becoming more expensive and harder to mine, people who are new to it find it very difficult to get their hands on it, especially if they don’t have the money for it, so their option is to switch to other crypto currencies and try to mine those and then hopefully exchange them into bitcoin, but that does not mean that they will replace bitcoin.
How is it more difficult to get your hands on Bitcoin if you can still buy as little as a few dollars' worth of bitcoins? Of course, you will have to shell out for almost a thousand dollars if you want a whole bitcoin, but you can easily buy only 0.001 of that amount. If you are going to buy altcoins, I don't think it would be any different since you would again have to spend the same fiat money.