I think it's super smart for businesses to stipulate a J1772 must also be installed as part of participating in the charging partners program. Sometimes it is local government ordinance that requires it, and that's also super smart of that municipality.
But, the Tesla HPWC install is 100% intended for Tesla owners only. Just read the verbiage on the page I linked, and the brochure they give to businesses. I've never been on the business-end of one of the deals, so I can only guess what the terms of the deal are, but look at the language they use:
"Tesla’s bespoke charging solutions give us a distinct competitive advantage over other automotive manufacturers."
"This allows full-service hotels, resorts, and restaurants to directly market to and attract Tesla owners. Our owners often craft their vacations and business trips around charging availability. By providing Destination Charging for your customers, you place yourself prominently in our owners’ view through Tesla’s Find Us web page and the 17” Touchscreen Navigation in every Tesla vehicle"
"The Tesla Wall Connector is a Tesla-specifc, Level-2 charging station. It can deliver up to 58 miles of range per hour to Tesla vehicles. It’s elegant construction and minimal footprint is designed to ft in nearly any location and enhance the aesthetics of your property."
"With the installation of Tesla Destination Charging, your property will join a rapidly growing network of premium destinations throughout North America for our owners to enjoy. In addition to being featured on Tesla’s website and in-vehicle touchscreen, partner properties will have full access to Tesla’s portfolio of marketing platforms."