Note: 'Excessive' is not an objective term to use for economics analysis.
Monopoly profits usually represent a form of price mark-up, setting MC = MR and then vertically matching the maximum willingness-to-pay for that unit and all units before it on the demand curve. This is socially inefficient but privately optimal.
yes it is
Yes
This will cause a new entry into the market.
Monopoly and Oligopoly are both the only firms that may make positive profit in the long run. Under LONG-RUN MARKET TENDENCY OF PRICE AND ATC: Monopoly P>ATC and Oligopoly P>ATC both will have postive profits, however it possible to turn to zero profits if there isn't capitalization of the profits or any rent-seeking activities or if the market is contestable. But moreover, the answer you're looking for is the above that bother Monopoly and Oligopoly will have positive profit in the long run.
Shared or Joint monopoly refers to anticompetitive behaviour by firms, normally an oligopoly, in order to secure monopoly profits for the firms as a group. Essentially, shared monopoly requires some form of collusion but stops short of being a formal cartel. It is therefore similar to tacit collusion. In a shared monopoly firms may not compete for the same customers and have instead local monopolies.
Excess profits piling up from tariffs and business combinations.
true
yes it is
Yes
The King Monopoly is gaining all the profits from the laborers' hard work
by eliminating competition to control prices
true
This will cause a new entry into the market.
Monopoly and Oligopoly are both the only firms that may make positive profit in the long run. Under LONG-RUN MARKET TENDENCY OF PRICE AND ATC: Monopoly P>ATC and Oligopoly P>ATC both will have postive profits, however it possible to turn to zero profits if there isn't capitalization of the profits or any rent-seeking activities or if the market is contestable. But moreover, the answer you're looking for is the above that bother Monopoly and Oligopoly will have positive profit in the long run.
Shared or Joint monopoly refers to anticompetitive behaviour by firms, normally an oligopoly, in order to secure monopoly profits for the firms as a group. Essentially, shared monopoly requires some form of collusion but stops short of being a formal cartel. It is therefore similar to tacit collusion. In a shared monopoly firms may not compete for the same customers and have instead local monopolies.
Stockholder.
Explain how monopoly causes an inefficient allocation of resources when the competitive firm does not even when both seek to maximize profit