I don't get why people would potentially pay money to get boosted to a rank where they have no chance of competing? What do they do once they get boosted to their goal rank?

Hi, I know a lot are skeptical about the new agent Skye, and for me the thing that I didn't like the most is its ultimate. It doesn't look like anything and it doesn't fit Skye's other utilities that are kind of animals (a dog and birds),...