He was trading futures. You need $10K in margin per future. He states somewhere that he started with $30K or so, and I estimate his "margin at risk" at any point was $100K or less.
And he surely wasn't paying retail prices - you can go down to around $0.50/future if you know what you are doing.
You should look more deeply into how these things work. Let's take the DAX Futures for example (which he was trading). All numbers are in EUR.
One "tick" (minimal movement) is worth 12.5 EUR. At volume you pay 0.5 EUR, IIRC, but let's assume you pay 1 EUR in fees, everything included.
If you bought and sold at the same price, you lost 1 EUR/trade. This is the cost of business.
If you bought, and sold after a favorable 1 tick movement, (e.g. bought at 4013.0 and sold at 4013.5), you're 10.5 EUR richer - 12.5 on the difference, minus 1 for each trade (one buy, one sell).
If you bought and sold after an unfavorable one tick movement (e.g. bought at 4013.5 and sold at 4013.0), you're 14.5 EUR poorer - 12.5 on the difference, and 1 for each trade (one buy one sell).
OP averaged $2/trade over 200,000 trades; that means he had 2/3 right calls, and 1/3 wrong calls or so if he only traded dax and only had 1 tick moves.
He was very smart, but you're looking at it wrong - the fees are the cost of doing business, much like salaries are the cost of producing software. In finance, you rarely care about revenue or "notional" (which can easily run into the trillions per year for a small trader - for ~1 eur, you get 75,000 eur in notional value on the dax).
You just roll the fees up-front into your choices when thinking about it, and it all makes much more sense.
(Not trying to take away from OPs very commendable achievement - just trying to give the common perspective on how to view this)
And he surely wasn't paying retail prices - you can go down to around $0.50/future if you know what you are doing.
(In general, futures have 1:5 to 1:20 leverage)