No, I just did exactly what you’re advocating for. I came into an unrelated thread trying to sell you something by posting it up for all to see, rather than sending you a direct message to see if you were even interested.
It’s literally an example of why what you’re suggesting is idiotic.
The rules here are the way that they are for a reason. It may not be perfect, but it’s a hell of a lot better than everything you’ve suggested. No one wants sellers harassing them in every thread trying to sell them **** they don’t want.