ran by people not affiliated with any corporations

i get what you mean, but i worked with a lot of corporation soles. usually single practitioner medical practices, for the primary purposes of: limiting liability and ease of sale (when the MD/DDS wants to retire). i'm not bothered by small business corps, since you have to register as a corporation (in the US) to be a charitable organization.

Yes but the buggers always find a way around it. Charities are banned from lobbying in Britain. Greenpeace UK simply set up a corporate entity Greenpeace Ltd to do the lobbying for it.