Not only that, system developers also need to pay copyright fees, royalties for related patents or trade secrets, etc. These costs need to be paid back through the sales system. Therefore, even publishers of open source systems need to charge a certain software distribution fee to cover related development and expenditure costs.
If you are a genuine user, you can get legal authorization, enjoy after-sales service and technical support, and get official updates and version upgrades by purchasing an officially authorized system image. Buying genuine software is not only in compliance with laws and regulations, but also a kind of support and respect for software developers.