That's the reason why retail loses:
Equities Prop Trader: Direct market access, realtime orderbook of every exchange, 200+ order routing options
Equities Retailer: Zero commission, gets fleeced on every execution because his orders are sold to market makers to lean against
Futures Prop Trader: Pays 1,5k/month for professional grade execution software with co-located algo/spreader functions. Pays exchange member rates and a couple of cents/contract in commissions. Has access to volume rebates
Futures retail: trades one contract for 2$ half turn and uses software that runs on the client. Has 300ms latency one way.
Guys, trading is a business. Once you're past the beginner stage you need to scale. And when you trade 5k contracts or 1m shares a week, you're not going anywhere with retail setups, period.
Retail is fine as long as you trade part time, invest or dabble a little as a hobby. But in order to make this endevour worth your while you better eye north of 20k monthly profit and use professional tools. For everything else, just keep your day job