Early on, I had a potential enterprise account (well known online store) that wanted everything that enterprises wanted in addition to multiple meetings (with all the stakeholders) for a $50/month account (my mistake for not getting that information upfront).
Another time, a large Canadian media company wanted me to agree to an uncapped liability provision. Respectfully turned them down.
All in all, I lost some prestige business but if I took them on, it wouldn't move my profit levels much.