This was planned and one of the greatest features (for a store of value): Limited supply. With limited supply you won't have inflation but deflation which is good for storing value but not good if you want to use it as a cash system. But for p2p cash use cases newer system like Stellar/XLM which integrate controlled inflation (1%/yr) are better.
> Buying bitcoins is making these 2000 people richer.
Guess you are confusing matters. Running a local wallet as a full node doesn't mean you make tons of money. You can run 20 nodes but your friend who is BTC trader could still have 100 times more BTC than you (so, running a node != holding a shitload of BTC).
> Actually I don't understand anyone that puts money in a cryptocurrency that is supposed to have "intrinsic value".
From another post: Bitcoin is a store of value. Moreover, it's one with a high liquidity, strong brand, limited supply, available in 180 countries, without banks involved and super reliable (gold doesn't have that features and please show me any other asset that has these features). So, it has a use and value.