If you are not willing to pay X amount every half a year (or major upgrade) for a alternative OS, where you only pay this for the commercial components like AppSupport and Exchange etc… If im not wrong there was also somewhere the thought about also offering a one time payment option.
But until it’s all decided and announced we can all only speculate on how the final pricing etc will be.
You will just have to wait till then.
Also the free Version will stay free so if you can live without the Commercial Components then you don’t have to pay a dime.