yes
Monopoly means that there are no competitor for your product or servises
YES
one firm which sells a good price set by that firm hard for other firms to enter market
Consumers will substitute with a rival's product.
I think the market structure of the apple is oligopoly because the firm like apple creating the ipod and iphone is some what few not exceed to 10 also. so, the firm apple applies to oligopoly market structure.
it is not a monopoly firm
Perfectly competitive, because both firms will compete to earn a greater market share (they are "price takers"), leading to prices that more closely resemble a perfectly competitive market than a monopolistic market (one dominant "price making" firm).
In the long run, if a firm is making a profit more firms will enter. This will cause profit to drop. Firms will eventually drop out because of this and economic profit will makes it way to zero(a result of the invisible hand).
He founded Apple, the computer and technology firm, and was its CEO until his death in 2011.
He founded Apple, the computer and technology firm, and was its CEO until his death in 2011.
perfectly competitive industry become a monopoly, what changes