iv. incinnbent rm can prevent entry by introducing good Y rst (this comes from the property that if the incumbent picks the entire prot maximizing quantity, there arent enough prots left over for the entrants to actually enter. Will the incmnbent introduce good Y? Rapeat the above exercise with a xed cost of 6. Is it still optimal from the societal prospective for good Y to he in troduced? Look at all the market structures (no entry1 entry with cooperation? entry with deterrence). Are there any mar ket rule[s} that will reproduce the TS maximizing rule for the decision to provide it"? If so, why? If not why not