It's a question of liquidity: If you stand to make $1m but have to put up $200k right now, that only works if you have a liquid $200k right now, and are willing

It's a question of liquidity: If you stand to make $1m but have to put up $200k right now, that only works if you have a liquid $200k right now, and are willing to risk it on a single company stock (as opposed to say a down-payment on a house).