Last week was about Apple VS Spotify, now Shopify VS Mailchimp. I just can't understand why big companies can't get along while there is so much money to make or lose.

I tend to support opensource apps like Magento or WooCommerce. Shopify is extremely easy but I don't get how they can complain when they actually hold all the ropes of their clients and say something about another services' data collection. What's the logic behind it exactly? Users want to use Mailchimp, and it is not always e-commerce related.