Which scenario demonstrates a monopoly created by a single-owned resource?

This scenario describes a situation with high fixed costs but low marginal costs, which does not inherently constitute a monopoly. Multiple bridges or alternative routes could exist, and the presence of infrequent use does not prevent competition or the potential for other providers to enter the market.

While copyright provides the author exclusive rights to their work, it does not create a monopoly in the traditional sense. Other authors can create different books, and multiple books on similar subjects can coexist in the market, allowing for competition among various literary works.

Similar to the author scenario, copyrighting software grants the inventor exclusive rights to their specific code but does not eliminate competition. Other inventors can develop alternative software solutions or similar applications, thus preventing a true monopoly over the software market.