I think even if you open up Western countries, there are more productive areas where labour can be absorbed rather than household work.
Servants in Singapore are probably are a result of Singapore’s migration policy. Let’s say a developed country had a lax migration policy that allowed people to just come and setup a business, work or study or do nothing.
Then this would allow people to take risks such upskilling themselves and moving into more productive sectors of the economy in a similar fashion to the native population. Current migration policies tend to be restrictive as they tie down individuals to a specific job.
Switching jobs, upskilling yourself or starting a business becomes really hard without breaking immigration laws. Thus, condemning workers to the low productive jobs that they first got when they came into the country.
How? It might be better to be homeless in US than having a house in Afghanistan. Job visa restrictions don’t allow you to be homeless.
I simply mean allowing people to stay in a country when they are in-between jobs or looking for other jobs. Most countries only give you a fixed period like 30-days to find similar work, otherwise you are asked to leave.
If there were no job-specific restrictions, people can save up money for a time period or work in another job / employer other than the one stated on your visa.
Not arguing against this. But the migrant can’t for example take out a loan and start a business due to visa restrictions or move to more productive parts of the economy.
See this as an example: https://www.reddit.com/r/h1b/comments/1l1lcwq/moving_to_india_after_15_years/