In reply to Miroslav Glavic.

Fair point. I remember when Ben & Jerry’s ice cream was a small start up in a Vermont garage. Pillsbury had Häagen Dazs, the first commercial premium ice cream in the States, as far as I know, and was telling grocers that if they stocked Ben & Jerry’s, they could not also stock Häagen Dazs.
Ben & Jerry’s fought back with a grassroots campaign, “What’s the Dough Boy afraid of?”, and clearly Pillsbury had to back down. (Ben & Jerry eventually sold out to Unilever, after being its own public corporation for a time.)
Still, IDK whether Ben & Jerry would have ever accepted sponsorship by Pillsbury, and certainly not the reverse. It would be beyond the pale to stop Elementor & its representatives from attending, not really even acceptable to stop them from having a sales booth or doing a workshop, but I was presuming that those would not be part of the proposed ban, just top-level sponsorship.