I get where you're coming from, but it wouldn't be $50/mo. These costs adjust with the cost of labor and land and so on. In the US the median household income is around $60,000/year. People pay ~$600/year for trash collection, or about 1% of the median income. In Vietnam, for example, the average annual income is in the area of $5,000/year (more in cities like Hanoi and HCMC, less in rural areas.) 1% of $5,000/year would be about $50/year, or $4-5/mo. People who are buying products that have the kind of waste byproducts that end up as litter will be able to afford paying an extra $5/month.

I'll ask my friend what they pay for trash pickup. I'm sure there must be something because they didn't have huge piles of trash around their home.