From the extensive list, you can see there are lots of ways visas can be obtained to stay in Thailand.
While it is true that the government may intend to clamp down on long-term visitors with very little capital behind them, they are obviously becoming more responsive to the fact that foreigners have an important part to play in the growth and investment in the Thai economy.
Here you can check a list of Countries which have concluded visa exemption agreements with Thailand.
Please make sure before your leave that you have the correct visa according to the duration of your stay in the Kingdom.
If you want to stay between 30 and 90 days, then you will need to apply for a single entry tourist visa (cost: 1,500 THB) in your home country before your trip. You will get 60 days on arrival and if needed you can extend to 30 more days at the local immigration office for a fee of 1,900 THB.