If unions are just about extracting higher wages and not about combatting injustice, then, IMO, labor organizing should not be protected by law, since it's desi

If unions are just about extracting higher wages and not about combatting injustice, then, IMO, labor organizing should not be protected by law, since it's desired end is to use the threat of financial harm to force companies and individuals to enter into arrangements that they would not obtain otherwise. Should a company's suppliers enjoy legal protection so that they can band together for the purpose of using threat of financial harm to extract higher prices from the company and preventing the company from doing business with other suppliers?