True, they would. But there is a limit to how much you can get out of it with just a text box. Just look at dalle2 vs sd - even though dall-e is much more capable and clearly better one out of the two, sd gives much more consistent results if you know what you are doing. Because you have full access to model we now have novel ways of inlining some state to pieces of text to assign importance, whole algebra done on embeddings etc. When similar thing happens to llm's nobody will care about the text box in ms products.