I disagree. On that same reasoning, giving a free 30-day trial of a service would be detrimental to a business by anchoring the customer to a 'free' price point

I disagree. On that same reasoning, giving a free 30-day trial of a service would be detrimental to a business by anchoring the customer to a 'free' price point. On the contrary, giving the customer a taste makes them come back for more. As long as your product is actually beneficial.