It is easy to make money in stock market, once or few times. However, it is difficult to make money in stock market long-term. I mean as an active investor not as a passive investor like index investing.
One disadvantage of using TA is asymmetry in information. Shrewed traders with Bloomberg terminals or i-banks like GS have far more advantage than ordinary investors.
Of course, if one thinks one is talented, that is a different story. I am just saying for myself and also guessing most of people here are not so sophisticated.
FA doesn't guarantee anything either. Investing is really not easy although it is very simple. Here is what Buffett's teacher describes the market - I just interpret.
Mr. Market is a person with unstable mind. Sometimes he wants to sell you $1.00 for $10 dollars. Other times, he wants to sell you $1.00 for $0.20 dollars. He will offer you price everyday and don't mind to be taken advantage of. As an investor, your job is to use Mr. Market as a servant rather than to let him to be your master.
Knowing the value of what Mr. Market offers is the only way to take advantage of him rather being his slave ...