What would John Citizen do with 4kg of Coke? He probably wouldn’t know anyone who deals drugs, and users he's aware of may in his opinion be the most unsavory of characters. Having that much coke in possession would be pretty unsettling for the unprepared or inexperienced, and if it didn’t initially make you nervous, then see how you'd be after 3 months of trading small deals while using ever larger amounts (there are approximately 140 ounces in 4kg of coke)
A few years ago, a story was relayed to me that involved an old hippy couple who stumbled upon some not so small containers. These guys were into dope and the occasional bit of smack when they could afford it. They didn't even know what to do with coke, and they certainly didn't know the people required to safely get rid of it.
The guy who told me the story said they had sat on it for 6 weeks, knowing someone (him) who knew something about it was to visit. Needless to say, he would have helped increase their knowledge and experiences with the drug.
Upon returning a couple of months later, the visitor described the hippies as “rich in paradise”. The clothes, the confidence, the attitude, the lifestyle - all devilishly cool.
The next time he returned was near the end of the stash. This time the hippies were different. He described them as being totally paranoid and lost. They loved and hated coke, and now their precious was all but gone. What would happen then? The story teller was stunned. Once a carefree couple who managed their former drug habits, they were now a pair of desperate, psychotic coke heads.
The story teller, someone who once often remarked on the virtues of coke, decided to give up his involvement with it altogether after this – for him it was that bad.
While there are many who are disciplined and use sensible amounts recreationally, I personally know of several horror stories involving naive people getting deeply involved with coke i.e. having large amounts at their disposal.
So I'd say the guy finding the 4kgs probably made the right decision, the same most average law abiding citizens would have. The “opportunity advantage” to this over the above story is that no-one was looking for the bundle. Mind you, as wazza said, who’s to say he didn’t actually find a few more kgs in total