When a new price is set for a subscription product that the user has been purchased, the user would have the right to criticize the price and consider whether or not to continue using the product.
This is especially true in the case of #Unity, which was used as a foundation for users to develop their own games, and once the game was completed, the users had the right to copy and distribute that game. However, #Unity's new price is not a matter of price, but of taking away some of the copy and distribution rights from the user. Therefore, users must carefully consider whether or not to continue using #Unity.