[rand49an]

Because the manufacturer has already paid to include that hardware into the product.

[chrisseaton]

But, as I say, that could work out cheaper for them due to simplified manufacturing. That's why other manufacturers usually do it.

[naasking]

Yes, it is cheaper due to economies of scale to include the hardware in all models, and the fact that they're selling it at all without enabling the feature means there's already a profit margin there.