Apple manufactures computing devices that require hardware and software support as do the USB DACs Meridian manufacture. Their products are also all in the price range or the Meridian devices you reference. They do not support those items after 7 years. Since 2 of the 3 devices you mentioned are over 7 years old being "ignored" by Meridian is not outside of the industry standard. The Apple comparison would not be relevant if we were discussing the 5 and 6 figure components Meridian is focusing on today.

558.2 amp, Meridian A500 speakers, M2500 sub, Director & Explorer DACs