It's a good thought John but most of the manufacturers/distributors/dealers monitor this board. The ones who don't are usually advised of the goings on by a some of the members here.
A read only forum is dangerous in that anyone can come on here to trash a company and no-one would be able to answer in defense.
Positive posts about companies are read ...not necessarily answered but remembered.
Negative posts are read also and are usually replied to, more than positive posts. Those are the ones that get signaled to the company in question.
If a few negative posts about a company are not answered, well, most members will have decided what that company's priorities are....not customer service.
That's what I suspect anyhow....