Let's give an example of you bought 100 BTC at 9000$ Price and the price went 9010$ in seconds then you sold, so your profit will be 1000$, may 500$ fees, but the another 500$ you made it profit in seconds!
Let's discuss at the point!
Discuss what?I can't buy 100BTC even if I sell my house and my car.
If you buy 100BTC you will spend 900,000 USD and your profit will be less than 1000 USD.
Your profit will be less than 1% of your investment,so why should you care about such small profit.
If I could spend 900K USD on something,I would definitely buy some super fancy car and get some hot girls as my girlfriends.I wouldn't care about Bitcoin at all.
Why not getting a x100 margin credit on some cryptocurrency exchange platform,buy some BTC,wait for the price to go up and then pay off the margin credit and cash out the profit minus fees.
No crypto trading platform will give you 100BTC as a margin credit for leverage trading.