The cost of running a business under 20% corruption margins or 20% หัวคิว will of course be added to all prices. This extra charge must be included in "as a cost of sale" and passed on to consumers. Thai consumers complain about rising costs of living but do nothing against unfair charges -- corruption is unfair!
When Thai people wake up, open their eyes, they will have nothing to see.
The country will no longer be theirs (or there!).