Those kinds of gains can only come at the expense of other "investors".
More people will start offering services on a blockchain and anyone with computing power will be able to run a node for the service and will profit directly from customer payments made to their blockchain address.
The key here is that anyone with moderate technical skills will be able to assist in providing a service by setting up a node on the relevant blockchain - It's not like in the current fiat system where I can't just run my own machine to help service Google users for example (in exchange for a commensurate portion of the proceeds).
It's a fundamentally better system because it takes out the middleman. The current fiat system is all about locking people out while the new system will be able making it impossible to lock people out of opportunities.
Single parents hovering at the poverty line also have their entire net worth tied up in the current fiat system and they're far more likely to be hurt than someone with the means to be flexible
Their net worth is negative.
They'd love nothing more than seeing their net worth rise to $0.