Which of the following is NOT one of the three reasons for heavy railroad regulations during the Initiation Era?

Starting a railroad company comes with a relatively high startup costs, therefore not many entrepreneurs enter the market; thus, railroads have a tendency to monopolize.

Railroad had the potential to unite the country, so government regulated the industry in hopes to stir it in the right direction and towards unification.

Since railroad mode of transportation was a new industry at that time, the government wanted to play it safe with more stringent regulations.

Railroads were a threat to existing motor carriers mode of transportation, therefore government had to step in and introduce regulatory measures to level the playing field.