...The 'BBB-' Issuer Default Rating (IDR) and Stable Outlook reflect Royalty Pharma plc's (Royalty Pharma) solid portfolio of high-quality royalty streams and cash flows. These strengths are partially offset by the sales risk associated with the biopharmaceutical products from which it receives royalties, uncertainties related to the acquisition of interests in development-stage biopharmaceutical products and revenue concentration in a few medicines....