sem que ocorra a permissão do fabricante mediante pagamento de royalties , o usuário se vê numa posição totalmente passiva e submissa diante a esses produtos.

O problema fundamental da interface entre o usuário e o computador está colocado pela escritora Christine Faulkner:

[...] “ One of the biggest problems the designers of human-computer system face is ensuring that the finished product is what the user really wants and needs. It is no simple task to ensure that a product is fit for the purpose it was designed for when the purpose is as complicated as many computer systems are endeavouring to fulfil. The problem is knowing exactly what sort of system that the user wants and producing the best system for that particular task and that particular user”.[...]