Furthermore, stuff that's common practice amongst squatters is expressly forbidden in other areas. At least in the US, you'd have a very difficult time trademarking an software company spelled "Microsoff", but typo-squatting is _rampant_.
There's a massively disproportionate amount of risk/reward for property speculation than there is for domain 'speculation'. If I find out about some new product coming to market and squat the domain - the company could potentially lose a huge amount of revenue, whereas I'm risking the cost of a latte.