The idea of pricing a product like Trello should be taxing the added value it creates. What can indicate added value in Trello? Not emoji stickers, for sure. It

The idea of pricing a product like Trello should be taxing the added value it creates. What can indicate added value in Trello? Not emoji stickers, for sure. It's the number of cards and lists. If a user creates many cards/lists s/he clearly sees added value of the product. Trello should've limited the number of lists or cards in the free edition and charge a fee for an unlimited edition. Those users who don't see much value in Trello won't use many lists/cards anyway. We've been using Trello as the main tool for project/product management for years and quite happy with it. I would gladly pay a reasonable monthly fee for it, but they didn't even try to charge me. I feel like it could've been a bigger business.