You could profit but don't forget to mention you could instantly lose in this scenario too. That is why this high risk high pressure scenario isn't followed by many, and it isn't because people don't like money. Because these kind of trades are hard to execute and require much studying of blockchains, orderbooks, richlists, and everything in between there aren't many day traders.
Indeed, it seems that its only discussed about the advantages but forget to share about the disadvantages in which you're correct that the Crypto prices are now really hard to predict and its very tough to presume that the price will spike for your instant profit but how about if it will fall instantly which mean an instant lose of your money too.