You could get ALTCOINS via Aridrops. Just get different new coins and save them in hope that they get a good value en future.
/Secureki
But I doubt that airdrops can get you anywhere near 1 btc per month. Unless you are going to spam it with alt accounts, airdrops doesn't really give that much. What can you expect, anyway? They are given for free and all you have to do is send your ETH address to the developers. For the effort that you did, airdrops pay really high but then again it will not take you anywhere near the amount that we are talking here.
Someone who has "a lot of money" wouldn't be looking for a way to earn 1 BTC a month because he can sure do better. Creating your own site is a good plan but what comes after that? You have to decide on what niche you have and a lot of people are already doing SEO (if that's what you are talking about, monetizing websites).
Another problem is that you don't really find a work that pays well. You work hard to get qualify for that position.