Cause the industry is lined with huge fraud is caused by general public unwilling to learn slowly. If people took three years and learn/studied price, they would not need vendors. And cause new traders uneducated, "Freedom of Speech" allows most to give real time calls. But here is the thing, even if cost is $1,000 month, good traders can make this in one trade, why mess around for peanuts of people disrupting when you trying to concentrate? Those who seek to get systems cause they new at trading are the very last people who should be buying systems. Experienced traders often buy something they might think is clever, but by then they have knowledge on how to adapt the system when volatility changes, even vendors change their parameters around monthly which tells me they are over optimizing their systems but younger traders don't know about concepts on making past seem real, newbies just have spinning money in their thoughts when it should be "orange, cherry, LEMON" slot machine.
If you even looking for systems or services to buy, never going to make it as a trader as you have to either remember speed of price changes or adapt to current price action and already have rules governing targets and protective stops need to change.
What I find the funniest are those who claim they have a system that only risks 4 ticks in ES, between slippage, commissions, losing trades caused by fast market conditions, drifting of price at point of entry, or retracements during higher volatility, can't see 4 ticks ever being wide enough.
Also funny are forex traders, they are almost always under funded but cause they have $500 account, it gives them something to do. Sell on new lows to only be stopped out. And if pip spread greater than one pip, might as well trade futures, pay smaller comm and use limit orders to entry.
Americans are so gullible, just advertise no commission costs and they come out of woodwork but make spread wider and then some. Spread is the huge commissions.