An honest review isn’t what’s going to kill their business. Even a bad product in and of itself isn’t necessarily what could cause the death of their business — it’s their not adequately tempering consumer expectations. From the sounds of it, they’ve oversold what the product can actually do, and are charging a price based on this fantasy.

If you’re honest in your marketing as to what your product can actually do, and charge a corresponding price then consumers and reviewers may be more forgiving. Where companies like this one which are doing fairly experimental stuff fail is when they over-promise and under-deliver. And reviewers will always take them to task when they do that.