The products all come from the same sources: China, other developing and semi-developed nations. China, as we all know, has some curious labor practices. Apple got in trouble because of the labor conditions in their factories. There were stories about factory dorms, and the like. I don't know if that's changed much from the late 2000s and early 2010s when it was publicised. Hopefully so.
As for child labor, I know that has been an issue in some fourth world countries. In China, some of the problem is
slave labor. Here's a 2019 NBC article featuring Costco's sourcing some clothing from that.:
The Chinese manufacturer was accused of forcing ethnic minorities locked in an internment camp to sew clothes against their will.
www.nbcnews.com
This article states that Chinese cotton in general, which may end up in all sorts of clothing shipped Stateside (one in three garments sold in the US in 2019 came from China) may have come from some slave labor.:
Products made by the forced labor of Chinese Muslims detained in “reeducation” camps in its Xinjiang region could be making their way to the US and other countries.
qz.com
This 2014 article talks about both Walmart and Costco sourcing shrimp from slave labor, which
both companies curtailed when they found out.:
Report: Forced labor used to produce shrimp sold by Costco, Wal-Mart and other top stores.
www.usatoday.com
These massive retailers get
container after container of goods from all over the world. It is obvious that they can't keep track of every single item's source, although it looks like they try, or at least they act when its brought to their attention.
Anyway, this all has little to do with
radio.
Like I said earlier, retail has changed, and consequently, advertising has changed. Even in the cities, it's not easy for small stores to stay afloat, because of the big malls, box stores, and online retail. I'm sure that affects radio, and other advertising mediums, too. My section of King County used to have two independent chains of newspapers, supported by local advertisers. That's all gone. Everything's changed. I think Mr. BTurner's postings here on RD about keeping it real with the local advertisers probably is the only way a lot of stations can keep the ads on the air.
There are probably a lot of other smaller city radio people who would say the same thing. I'm sure it's not easy, either. I have tons of respect for the advertising people who can keep the business going. I never was good with sales. It takes a certain, optimistic personality to do that sort of thing.