Guys,
If you want to win the race, you have to stay ahead! I have been trading since 2005 and an Amibroker user for more than a decade. Since last one year, I have shifted to Tradingview Pro.
There are people around, who doesn't mind to pay for a service and there are a lot who wants things for free. Traders, who have survived the game, or learned the markets always pays for good services. At one point of time I even paid for eSignals.
Here are my few cents for you:
1. There are a lot chepo online charting sites which give the basic features. You have to have something better. Think about Tradingview, Robust, no downtime, excellent charting experience, backtesting, alerts, scanners, custom codes!!
2. Data feed is expensive. Though Amibroker was great, I shifted to tradingview for integrated seamless data options for less. A monthly payment option gives better flexibility to small traders.
3. Cross-platform capability - Amibroker only on windows, Ttradingview eberywhere.
4. Data feed options - Tradingview only gives NSE, no FnO, no MCX
May be if you make something which touches all of these, I am ready to pay always!