Google tell me average wage in USA ,AUS and UK are as follows (converted to baht at todays rate).
USA - 220,000.00
AUS 110,000.00
UK - 170,000.00
Me thinks your claim "the low end of your ridiculous figures are higher than average wage in".
Is not accurate !!
FWIW I have a Thai friend who is very high up in a multinational company based here in Chonburi, he is on 500k+ a month, high earners like that are few and far between but the do skew any "average wage" calculations.