They won't stop those events.
Look this thread
https://forum.topeleven.com/top-elev...th-august.html

there are problems with the new update about the morale thing but instead of fixing it and wait to see if it works good, the start a new event
https://forum.topeleven.com/top-elev...st-august.html

Why ? because they earn from those events and the people who join again and again after paying.
That's why they have discount promotions in every event.