I want to ask something.

There are so many bitcoin clones since it is open source. I also saw cryptonote. And nxt. What do they get by creating a clone? Why not focus all the efforts to bitcoin?

Also, how much does it cost to create a new coin?

Also, if I have, say 20 bitcoins, and buy some clone with a low market cap, now I have a big share, will it drive the price up?