On get rich quick startups, I would disagree with your views because a get rich quick mentality is a key trait for entrepreneurship - if it comes from a value creation perspective. It is about recognising that resources are scarce and therefore looking for the most productive way to allocate capital by generating compelling high value propositions for society.
Even investors want to get rich quick from their investments.. because they trade in capital (and have many lower-risk options e.g. bond markets)... and that's why the less sophisticated ones ask for outrageous equity for minimal investment (literally sabotaging themselves) and push to exit with multiples in less than 5-7 years which leads to a lot of craziness (and often guaranteed failure / loss).
Get rich quick becomes a problem when it is linked to extraction (deception / theft / plunder) instead of real value creation. But that is mitigated by rules (regulations), oversight (e.g. board representation) and checks/balances (e.g. investor appointed counter-signatories like CFOs). Systems fix these things.
Competent investors understand risk and would give credible reasons like high transaction costs (heterogeneous markets / low disposable incomes - which works against population size, political uncertainty, arbitrary rules, corruption which lowers rust in redress institutions like courts, lack of credible exit paths, liquidity challenges, inflation and fragile currency).
On financial services, beside the fact that it would displace jobs geographically (which would leave the now jobless farmers worse off), I don't think its a sustainable path for mass jobs creation (or growth). That sector is already being massively disrupted by tech - and things will get worse as Fintech AI becomes more reliable, accessible and affordable.
Have a great day!