I make billions (#6)
This is a two part connect wall puzzle. The sixteen words should be arranged into four groups of four words, with each group's words related to each other by a common theme. The four group names can then be used to find the final answer.
box farm fire flat games giant hill monkey pig queen roll space tire vein wing wolf
Hint for after you solve the groups:
Although the group names might relate to a man, the answer should be the name of a company.