Huh? I don't recall ever seeing Apple paper. To your larger question--Apple established the PostScript printer as a departmental mainstay. In general, it established graphics printing with text in multiple fonts. There are, however, no more innovations to bring to the printer market and no more profits to make there. For more than a decade, printer prices have been dropping like a stone. You can now buy a Mac-compatible HP DeskJet for less than $50. As a practical matter, inkjet printers are now disposable. You can now buy an inkjet printer, use it until the included ink cartridges run dry, throw it away and buy a new one.
Even genuine PostScript color laser printers are priced like inkjet printers of old. Non-PostScript color laser printers are available for less than any Apple-branded printer ever sold.