Dude, you seriously need to craft your pitch to fit your audience.
Consider that the overwhelming majority of the people here are already capable users of one or several of these platforms; that some of those platforms are mature and full-featured; and that, by contrast, your platform isn’t even in beta yet. That said, you might want to phrase things a little more diplomatically.
Consider, too, that people are likely to look pretty sceptically on the idea of a platform that is ‘complete’ while still being simple and requiring no programming language. For instance, I don’t really think of any platform as being complete unless it has sophisticated, well-documented tools to manipulate lists and strings. That’s going to require programming, no matter how you slice it. A system that avoids the need to know any programming language is going to be limited in some ways – or, at least, claiming otherwise is a pretty extraordinary claim, and needs to be backed up with some solid proof of concept if you want to be taken seriously.
Also bear in mind that the IF community quite regularly sees new people declare that their shiny new platform will fix all of the world’s ills, shortly before they turn out to be all mouth and no trousers (and then, generally, flounce off in a huff when we fail to acknowledge the brilliance of their vision). This credibility problem goes double when you’re asking for money.
This is not to say that the existing platforms cover everything that people want. There are definitely gaps that could be filled. But you need to figure out your niche; and it honestly doesn’t seem as though you’ve scoped out the competition all that well. If you’re making a gamebook/CYOA platform, I7 and TADS are not the things you need to be comparing yourself to. Rather, you need to be thinking about where you fit in vis-a-vis Undum, ChoiceScript, Varytale, StoryNexus, Twine, Inklewriter and perhaps the CYOA-ish side of Quest. (You really shouldn’t describe what you’re doing as ‘text adventure’, by the way; while the term ‘interactive fiction’ gets used in some pretty variable ways, ‘text adventure’ has only ever referred to parsed-input, physical world-model games of a fairly old-fashioned type. A gamebook is not a text adventure.)
It appears to me as though the niche you’re aiming for is somewhere close to Varytale, but (in contrast to Varytale) aims for something RPG-like and with a more literal, paper-gamebook-style choice tree. Or, to put it another way, something like Choicescript with a simple GUI. I think there’s probably room for a platform like that: certainly, I see lots of people trying to make combat RPGs in I7, or tree-branching, character-creation-heavy RPG-like things in Varytale, when those platforms aren’t really designed for that kind of thing.