Has anyone had any experience with these types of programs from "big" companies, e.g. the Microsoft Startup Accelerator Program, or Adobe Ventures, etc.? Ones w

Has anyone had any experience with these types of programs from "big" companies, e.g. the Microsoft Startup Accelerator Program, or Adobe Ventures, etc.? Ones where you are essentially showcasing their software (or hardware) and they give you "support" in return.