Ever wondered why most of MMO games are never new thing? We have the answer to that. It has to do with the Chinese game engines. Simply They use the same game engine repeatedly. Can be one of western game engines or Chinese Custom made. Once they create the game, they use illegal assets or pre-customized assets or pre-created assets from AI. Then the question comes, how do they create such systems and what is the entire concept behind it? That is an easy to answer. They are using Power based system. Simply the more equipment you push the higher digits you are. The more you progress in game, the higher rarity the higher expense you have to pay for otherwise you spend all of your life just to get it and that is their plan. They are aware of everything in the game. They have run multiple simulations and trial & error concept to make sure that every value whether free game currency or premium game currency will be encouraging to stay and feel attachment toward the game character or avatar or profile you have created and then because you have tried their first flow, you are likely to stay and force your self to use your money. You will wonder then if you want to get paid items in the game or not. Still confusing isn't it? Then let's break it down to smaller steps.

Game systems:
Power system- Drives you to reach certain quota of power then use credit card to continue the progress

Item rarity- Forces classifications on items to determine total worth of item value so you can purchase it based on that rarity.

Automated system- Makes sure to deprive away from complete manual control so your character are more of idle game character to play all by itself without allowing to choose the missions you want to accomplish with greater benefit than what given to you.

Free currency- Only free budget for beginners to undergo the trial costs, as the game starts you are allowed to be free to play to test the game out until certain point of game but not actually to play it. Think of it like demo games concept or software license trial expiration. That is the same. However, it is limited by certain budget of free currency. Like game coins can be obtained till level 50 but you can't get them past that level anymore.

Dominance- Like the dictator system in old times of Chinese empire. The emperor can be granted power and influence which then helps the big game hives to annex smaller group of players unfairly using external communications in series of plot twists and monopoly.

Military system- Imagine how many you can create of affiliated groups of guilds or clans or alliances to have one major hive taking the seats of the top rankings in the server, yes it is full of drama, conspiracy, plot twists and more than anything defamation and irrational hostility.

Multi servers system- Each server is like fish glass farm. They go with names like S1 or S2. They are not quite regional based. Instead they are hosted in china and they led by American branch. Each group of player goes there and start their kingdom and strife. Be it genuine or actually plotted by the game industry. Setting set of scenes and getting paid for actions in game to create chain of ultimatums forcing you to use the paid game offers and drain your pocket for it.

In other words if items are covered by paywall, then you are asking for people to put money in it. But can be there a true winner then? No, because it is easier to send beta players or knowledgeable players to harvest for the game staff the top seats in the server and allow nobody else to do anything plus they earn more traffic as game members of top military formations which helps in influencer program and partnership on any media like YouTube or Discord. That is how it goes! Walls and Walls like the great wall of China!