1.Bitcoin changes financial condition of many people who don't have any source of income before joining bitcoin.
bitcoin is just money and people who can make money will make bitcoin too and vice versa. bitcoin doesn't change anything about it.
2. It give platform to investor to get high profit by investing money.
a trader trades anything, bitcoin, altcoin, forex, stocks, gold and makes money from all of them.
3. Many people start their business offline by earning from bitcoin.
this also can be done with fiat. if you can run a business you can do it with bitcoin too. and vice versa.
in short none of your reasons sound to me like any "game changer".
however, if you see bitcoin as this decentralized cryptocurrency that you can use safely and without needing any banks or any third party for that matter, then you start getting closer to the meaning of "game changer" and all the things you listed can be somewhat true.
1. I am talking about those who have no proper source of income before joining bitcoin, so after joining bitcoin their financial condition changed.
2. Traders trade everything but this forum give them a platform to know about other crypto-currencies and get profit by investing money, and gold is not as much profiteable bitcoins or altcoins trading is more profitable.
3. I meant to say that people need capital to start business offline or anywhere so bitcoin help them to make capital for starting business offline.