In reply to Tomas M..

Otto actually made a post about scenarios like this a while back. It's worth a read: https://make.wordpress.org/plugins/2016/02/12/on-the-topic-of-selling-your-plugins/

I agree that the people behind Formidable Forms should not be blamed for the buyer's behaviour, and shouldn't apologize or anything. It's clear in the article on Wordfence that they regret selling the plugin to the new owner.

Content Aware Sidebars, one of the alternatives Sarah mentioned, has never been for sale, but I still get unsolicited offers from time to time. As I never read the emails fully before marking them as spam, unfortunately I don't know if I've been contacted by the same person(s) that acquired Display Widgets.