It's common for businesses to turn away customer segments that could be antithetical to their ability to service the rest of their customers. For example, many

It's common for businesses to turn away customer segments that could be antithetical to their ability to service the rest of their customers. For example, many credit card processors will turn down businesses with higher rates of fraud, like strip clubs. That keeps everyone elses fees lower and lets them operate a more efficient fraud department. On top of that it's hardly like Mailchimp has some sort of monopoly. There's dozens of ESPs and turnkey email platforms that will welcome blockchain business... they just don't have Mailchimp's inboxing rate.