99% of day traders won't make what a "Good" swing or medium term swing trader can make on yearly basis, The amount of commissions Retail makes hurts big time, the first 100-120% of what a day trader makes goes to fees, this alone is part of the 95% who fail, the other 4% have learned to make consistent monies, but too often still retail and making less than 500k a year, they still have hurdles of putting on size. Once you get into 1% you leasing/owning a seats, might have a staff, you have to be doing volume to get better pricing, nickels adds up to huge money. This is based on my experiences trading and owning a brokerage long ago for thankfully just a year-I simple don't like dealing with the public..., but I have talked to many brokerages through the years as well, nothing changes, cause people for most part are lazy and computer dumb.
Another aspect that many don't take into consideration is loss of wages and bennies that swing trader is making, if they are making 100k plus health etc, day trader unless disabled or retired has to cough up health insurances, dental, pay his own vacation and losses on sick days, doesn't have 401k that company matches. So the 95% that lose, lose much and then some and the 4%-some of them might be coming out below than working for a company.
Many don't consider quality of life and loss of quality of life, if you do learn to find the Gold Ring, trading becomes all encompassing of your life, always trying to become better, and if you never able to push volume....you can lose your life or lose the other fun activities in life.
Many simple don't realize what you have to give up. You learn how to make it and then start sliding backwards so you can experience life, or be rocking in a chair dribbling yelling out where is my green jello.