Complex sentence: Thomas Elliot previously had access to the vast resources of the Elliot household, putting him on par with Bruce Wayne, and so he's fully able to fund his more expensive plans, and get the cooperation of the main villains in Gotham, like Mister Freeze.
Split into simpler sentences: Thomas Elliot previously had access to the vast resources of his family fortune, putting him on par with Bruce Wayne, and so he is able to fund his more expensive plans. He is also able to buy the cooperation of the main villains in Gotham, like Mister Freeze.