I don't understand this phrase, are you able to explain it?

Guess: If properly stored (physically), good-quality paper documents and photographs will last for centuries. But as soon as you digitize them - you're now chained to the treadmill of maintaining/upgrading/migrating digital archiving systems. Compared to keeping the old-fashioned Archive Storage Room dry (and fire-free), that's 100X the labor and expense. Forever.