The study looked at all companies in Thailand and found that most are medium-sized, not too big or too small. The big companies have more advantages in getting money than the small ones. Small companies don't invest as much in things like buildings and equipment as big companies do. Medium-sized companies make the most money compared to their size, but they don't borrow much. Big companies make less money but borrow more. Small companies make less money and borrow less. This shows that Thailand's companies don't use their money efficiently and are at risk of financial problems. The study suggests that small and medium companies need help to grow.