Many apps support buying fractional shares. You don't have to be rich to buy shares in public companies.

It's only meaningful if you have enough disposable income to invest that it eventually (and I don't mean in 50 years) makes a dent against your living expenses.

If you make $4k/mo and rent is $3k, it's pretty silly to state that it's a meaningful thing for someone to scrimp and invest $100/mo into a brokerage account.

They definitely should do this, but it's not going to have any meaningful impact on their life for decades at best. Save for a decade to get $12k in your brokerage account, say it doubles to $24k. If you then decide you can get a generous 5% withdrawal rate you are talking $600/yr against rent that is now probably $3500/mo or more. Plus you're killing your compounding.

It's good to have so emergencies don't sink you - but it's really an annoying talking point I hear a lot lately. Eye rolling when you are telling someone struggling this sort of thing.

It really only makes a major impact if you can dump large amounts of cash into an account early in life - or if you run into a windfall.

It's not like the individual share price of e.g. VTI or FZROX is all that high to begin with.