To my mind that's a shame to earn money from faucet farmers.
I remember when I was still new to bitcoin and I started out with faucets
although I'm still into faucets but xapo doesn't fit it anymore. You're profit from claiming satoshi's with different faucets will be gone when you are about to transfer it to an exchange or any wallet that you are comfortable with.
It's not just about xapo but the whole idea of "faucet" is not that worth it anymore.
If they don't have good profit from their business (which I doubt highly because a lot of people uses their service + rich ones).
They had a good profit, they had other service like debit card which has also high fee.
Despite their overflowing profits don't forget that businesses are always looking for "new customers" and the same also goes for xapo which is why they are still into these faucet things. If you're an owner of a business, you will be always on the lookout for new opportunities, you just don't stop at one point just because you're already earning enough.