There are some things in scripture that are called an "abomination" to God. That is a strong word. What does it mean to say that something is an abomination? Listen to these synonyms: If something is abominable, it is abhorrent, detestable, contemptible, loathsome, offensive, repulsive, revolting, disgusting, foul, reprehensible, despicable. If God calls something abominable, then it offends him to the core.
Look at some of the things God calls an abomination. Lying with a male as you would a female is an abomination (Lev 18:22). Cross-dressing is an abomination to God (Dt 22:5). Bringing the income of a harlot as an offering to God is an abomination (Dt 23:18). Remarrying a wife you divorced after she has been remarried is an abomination (Dt 24:4). Idolatry is an abomination (Dt 27:15). And the list goes on. There are some things that are so contrary to God's nature that he calls them an abomination. There are some things we would all consider pretty heinous on this list. Some may be surprised to find this one on the list.
"You shall not have in your bag differing weights, a large and a small. You shall not have in your house differing measures, a large and a small. You shall have a full and just weight; you shall have a full and just measure, that your days may be prolonged in the land which the LORD your God gives you. For everyone who does these things, everyone who acts unjustly is an abomination to the LORD your God" (Dt 25:13-16).
Anyone who acts unjustly is an abomination to the Lord. Unfair busines practices, cheating someone out of their money, getting rich from exploitation of others would all be considered acting unjustly. These are detestable to God.
An example of this comes from Amos. Amos condemns the people for their lavish lifestyle (Amos 6:1-7), which came as the result of exploitation, bribery, and other unjust means (Amos 5:11-12). The oppressed and exploited could not find any justice in the courts which were located that the gates because they didn't have money to bribe the officials. As a result, notice God's reaction to their worship:
"I hate, I reject your festivals, Nor do I delight in your solemn assemblies. Even though you offer up to Me burnt offerings and your grain offerings, I will not accept them; And I will not even look at the peace offerings of your fatlings. Take away from Me the noise of your songs; I will not even listen to the sound of your harps" (Amos 5:21-23).
On the other hand, notice this passage:
"Did not your father eat and drink And do justice and righteousness? Then it was well with him. He pled the cause of the afflicted and needy; Then it was well. Is not that what it means to know Me? Declares the LORD" (Jer 22:15b-16).
Knowing God is linked to pleading the cause of the afflicted in needy. If we know God and understand that he is passionate about justice, then we will plead the cause of the helpless and not take advantage of them. This, not exploitation, would bring prosperity (Jer 5:28). I would be as passionate about not buying products from companies that take advantage of the poor and helpless as I am about not buying products that promote homosexuality or some other abominable practice.