I saw a lot of company offering hostings, dedicated servers in the world, is possible to have some market for a new companies?

The market is saturated, but if you work hard and have some ideas....

There is still plenty of the pie left, and constantly growing. Especially Virtual Servers. Those are growing more then anything right now. Jumping on that bandwagon might get you somewhere, and like the previous post. An original Idea can make you a very rich man.