The very few people, like one in a million, having this type of return just got a lot more likes and retweets and posts online which makes people think that they could do the same. After all, they saw someone do it, so they think it's possible if someone did it, and the "possible" part is true, of course it's technically possible, but is it probable?

The person you saw that had this kind of return was someone who got lucky as everyone said, and it is very unique situation, it happens one in a million people, maybe even less, so the chances that you could be that person is very little. By same logic, if you buy a lottery ticket, you do have a chance to win millions of dollars reward from it, nobody can deny that, the "possibility" of hitting the lottery is there, but do you really buy lottery thinking it is going to happen each time? Of course not.