In CPA lead's ToS it states they can cancel you whenever they want, upon signing up you agreed to that so a lawsuit will just waste time and money for everyone.
Not really, a TOS still has to follow state law. For example you can't write a TOS that goes against state statutes you still have to follow laws, which is one of the reason paypal was sued years ago, and lost...don't think because a company has TOS they can do whatever they want, that's not so. The purpose of a good attorney is to find which laws there breaking in there TOS.
STATUTE
A law established by an act of the legislature.
Under the U.S. and state constitutions, statutes are considered the primary source of law in the U.S. -- that is, legislatures make the law (statutes) and courts interpret the law (cases).
Then what happens, a attorney goes into older cases relevant to yours and see what the judge ruling on those cases were then, and use those cases as support to rule in his/hers clients favor
Example:
The Nevada Fair Employment Practices Act prohibits public and private employers from printing or circulating any notice or advertisement indicating any preference, limitation, specification, or discrimination based on race, color, religion, sex, sexual orientation, age, disability, or national origin. However, such a preference, specification, limitation, or discrimination may be expressed when religion, sex, sexual orientation, age, physical, mental or visual condition, or national origin is a bona fide occupational qualification (BFOQ) for employment. The law applies to employers with 15 or more employees (NV Rev. Stat. Sec. 613.340).
So no company could write a TOS that violates this Navada statue code (NV Rev. Stat. Sec. 613.340).