A false balance is abomination to the Lord : but a just weight is his delight. When pride cometh, then cometh shame: but with the lowly is wisdom. The integrity of the upright shall guide them: but the perverseness of transgressors shall destroy them. -Proverbs 11:1-3 KJV
Dishonesty, or lying, is an abomination to God. Think about: He made it one of the 10 commandments! (#9, Exodus 20:16, Deuteronomy 5:20)
Dishonesty denies the image of God in others. It is the same as saying other people are worthless.
It also leads to problems.
Something to arise in the most recent recession (about 2008) was the business of buying gold. You can bring in your jewelry and knickknacks to be weighed and sold based on the current market value. If a merchant used poorly (or fraudulently) calibrated scales, they could pay you far less than the current value. (I spent a very short time doing this, and they usually purchased an average of 15% below market value to make a profit.)
Who does it profit? Obviously the merchant.
Wait and See
One positive to government regulation is that there are frequent inspections to stop people from falsifying their scales. Those caught had to pay huge fines and permanently close up shop. At worst, they also went to jail.
When dishonesty is used, it is usually found out. Just look at the news on almost any given day, when business and government leaders are caught in the act of deceiving people.
Usually, it is because their pride convinces them that they are smarter than everyone else or that they are above everyone else, that the rules don’t apply to them.
But wait and see, their deeds will catch up to them.
It may not be in this life, but there will be consequences.
However, living honestly and with integrity not only protects you from bad consequences in this life, but it can lead you to live like God, who cannot lie (Numbers 23:19, Titus 1:2, Hebrews 6:18), and to Jesus, the way, the truth, and the life.