The Play2earn games not only free, they allow to earn money. That is why they are so attractive.
Now appear some games that combine DeFi and NFT like https://twitter.com/LaCucina_DeFi/status/1466776061493059584
Such games allow to earn even more money.
NFT allows earning money for many people. Many people create NFT to earn money. Other people earn money on collecting, buying and selling NFT.
A lot of people buy NFT and use them for investment purposes. It is possible to make even more money on NFT than on altcoins.
That is why there is so big demand in NFT.
NFT are very popular now and in demand.
There is a big demand in NFT because many people buy NFT hoping in its future growth in price.
The rise of the price of NFT attracts a lot of attention.