There's no such thing as "bad trusts" or "good trusts!
President Roosevelt established a Square Deal in which his goal was to keep wealthy and powerful businesses from taking advantage of small businesses and the poor. He believed that big businesses could be efficient but were bad if they bullied smaller companies and cheated consumers.
Your monopolies are fine if you don't hurt smaller companies too much.
President Roosevelt gained the nickname of "trustbuster" after he was able to distinguish between "good trusts" and "bad trusts."
I'm establishing a New Freedom.
After Roosevelt, Taft became President and dropped Roosevelt's distinction between good and bad trusts.
I think we need commercial banks to be put under some sort of control.
President Taft allowed big monopolies as long as they didn't "unreasonably hurt" smaller companies.
President Wilson became President after Taft and established a New Freedom, which placed government controls on corporations in order to benefit small businesses. He always pushed for more government control over the economy to help small businesses.
Under President Wilson, Congress enacted the Federal Reserve Act, which placed commercial banks under the control of a Federal Reserve Board. This protected the economy from having too much money end up in the hands of one person, bank, or region.