Not everyone does profit. That's the rub. There are plenty of people out there who bought Bitcoin, or more likely some random altcoin, at an all time high, spent money on fees as well and then never got it back. They're generally referred to as Bagholders, slang for a shareholder left holding shares of worthless stocks, or here in the cryptoverse, worthless altcoins. Many of us here have done it. A few years ago when I was still a n00b, I lost money on a few different crapcoins. They sounded like they'd be profitable, but then tanked. But luckily I made up for it with some far more profitable trades and learned a few things along the way. That said, even now, there's absolutely nothing preventing a sudden shift in the markets from turning my, or anyone's, current holdings from a win to a loss. Even experience is no guarantee of profit.
Trading is tantamount to gambling. There are a few winners, but probably as many, if not more, losers. The generally held assumption is that over time, the price of Bitcoin will increase, but that's all it is. An assumption. There are no guarantees. As others have mentioned, gambling with smaller amounts means the fees do hit you harder, but to deal in larger amounts means more risk of greater loss if you get it wrong. It's not easy. Plus, if you do constantly withdraw to fiat, you will naturally pay far more in fees. Personally, I've never sold Bitcoin in exchange for fiat and have no plans to do so for the foreseeable future. My goal in trading is to accumulate more Bitcoin, not fiat. But that's my gamble and one that may not be right for you. Play responsibly and don't gamble more than you can afford to lose.
I always love reading a post from someone who got the experience to speak of and who also have the grasp of the English language in expressing the thoughts well enough. Okay, having said my appreciation, I want to give my piece of an opinion also. Right now, the world of cryptocurrency can be liken to the Wild, Wild West in the American history where laws and regulations were not yet firmly in placed so everyone can come up with his own rules to follow.
Definitely, there would be winners and losers just like any open market. And people new to this kind of set-up must learn first the rope before jumping into the fire. Though we have to understand that this is not really unique with cryptocurrency as any other investment vehicle also poses many risks. I also got into the same situation and I still have coins am waiting to get back to the value when I bought them...still hoping for some miracles I guess otherwise I may decide to just cut some loss, if necessary.