TL; DR: washing-up-detergent maker Pril does online competition and promised to put the winning design on shelves, the design that got most votes: https://heideblog.com/wp-content/uploads/2011/05/screen-shot...
Somewhere online there's a pic of these things on the shelves/they did make them as collectibles.
The inherent issue with these campaigns is the select for initial response not how long you’re going to like some design.
Boaty McBoatface is the most famous boat behind the Titanic, so it definitely worked.