If you don't want to use 3rd party stores, simply don't. Other users using 3rd party stores does not hurt you. And if companies decide to only publish their sof

If you don't want to use 3rd party stores, simply don't. Other users using 3rd party stores does not hurt you. And if companies decide to only publish their software on a 3rd party store, they would lose you as a customer, so market forces would make sure your primary story is served as well, if it makes sense from a business POV.