In general, trading is not investing. You may justly ask what's the difference, so I reply. In a zero-sum game (which Bitcoin is quite close to), there is hardly any. Your investments can be considered as a sort of prolonged trading (with the same outcome). In this case, because of the presence of those who gain profits based on "established profit opportunity", luck would play against you in the long run (just like in a Bitcoin casino). In the real world, this also holds true with respect to derivatives markets (e.g. options and futures). That's why insider trading is so severely punished by the controlling bodies (see The Billions movie series). This is not the case with bonds and stocks, and even less so with dividend paying stocks, since you are still expected to earn something in the former case (bonds) and can eventually earn through dividends in the latter (stocks). As a shortcut, you can safely assume that the farther the market is from real economy, the more speculative and thus more prone to all sorts of manipulation, cheating, and arbitrage it will be...
So, at one end of the investment spectrum we have bonds where you are guaranteed to get back the principal and interest earned in due course (no luck involved), and all sorts of HYIPs and Ponzi schemes at the other (pure luck, or lack thereof, lol)
@deisik,
I see, yeah, however much bitcoin could be seen as a commodity, the separation between it and the real economy makes the market close to a zero-sum game - although I wouldn't call it zero-sum outright. This is even more so with altcoins.
On the other hand, the hype might be measured maybe, and the odds of winning such purely speculative games could be increased. In the end, the crowd is not well informed as the efficient market hypothesis assumes. So maybe those who are experienced in these waters could read between the lines and be
de facto insiders.
I have to add that I haven't done an extensive research on the altcoin markets. As far as I can see, with enough hype and greed seen in the forum, all cryptos undergo a pumping period, which also signals its end beforehand. So maybe a properly diversified portfolio might bring a positive expected return. But as I said, my expertise is mainly focused on the stock market, and I'm not sure if this works out with crypto.
Best,
Jian