"Pay-to-play" is a model in which a developer makes money by selling software to players for the game experience, while "free-to-play" is a one-way business model in which a developer attracts a large number of players with the hook of playing for free and then makes money by offering a way to satisfy the desires of recognition for top players or provide items that will save time. In contrast, "play-to-earn" is a multi-way business model in which all stakeholders, including users (players and investors) and developers, interact with each other and each earn revenue.
In this way, new wealth is created as the entire ecosystem grows. Platform participants take a percentage fee from each transaction in this new model.
Each of the stakeholders (players, investors, developers, and platformers) has a lot of room for improvement and refinement in terms of scalability and sustainability, and there are many issues that need to be resolved for the market to grow further.