"Companies should, at least, include an order form in the box so you can order a spare drive if you choose. In a quality player, it’s the only part that wears out. Of course, the greedy would rather you bought a new player when the old one no longer works."
It might surprise you to know that there are a few reputable manufacturers that don’t expect you to have a problem but if you do they have parts in inventory earmarked for just the case along with the diagnostic and repair support. The important thing is to find one of those manufacturers and think long and hard about what your prospects of keeping the component are for the long term.