I like your thinking but in my experience deals of all sorts, unless it is an actual buyout, would rarely and more likely never dump cash into the pockets of small investors when that money is really needed by the company. Such equity buys are always direct so that the money goes to work. It’s just bad business and imprudent. If they are “investing”, they want that money to go to creating manufacturing facilities, paying employees, hiring marketers, and advancing the name of the company and product into the marketplace.
But if they were advancing funds on a milestone basis for very particular rights to the product, to market a combination therapy, perhaps with Keytruda, let’s say under a Merck created brand name, for a geographic region, that might be more likely to be acceptable to me.