They must jump through the irrational and expensive hoops of the FDA, and patents are only 20 years (compare with corporate copyright of 75 years). This makes them pursue only blockbuster and knockoff drugs. Stuff for chronic diseases you're going to buy for years.
The boot device is the device from which the operating system is loaded. A modern PC BIOS (Basic Input/Output System) supports booting from various devices. These include the local hard disk drive, optical drive, floppy drive, a network interface card, and a USB device.
A disk can have both an ESP and a BIOS Boot Partition. The latter is used only by GRUB, so a disk can be bootable in both EFI and BIOS even without the latter, depending on what boot loader is used. A separate Linux /boot partition normally exists outside of a RAID array.