That's ability, not opportunity. (Ability is what you can do, whereas opportunity relates to markets, regulation, social capital, etc.)
My argument is that everyone has the same 15 or 20 basic human needs, and increasingly each of those needs is being met by two or three global corporations, as opposed to two or three local or national companies. Which means that even if you as the individual are more talented or whatever, there is actually less opportunity to use those talents to fulfill human needs at scale in a profitable way. That's why such a large percentage of employees today work low wage jobs in the service industry, as opposed to physical/digital manufacturing.
And network effects are only one way in which technology has decreased opportunity. Another is environmental degradation. E.g. 300 years ago anyone in manhattan could feed themselves just being sticking their arm in the Hudson river. But now all 100% of those (edible) fish are gone, and all the profits that were made from dumping industrial chemicals into the river have been privatized by the wealthy.
A third way is legal regulation. Every time a new technology comes onto the market the government has to regulate, which often shuts out everyone except the super wealthy from competing. (Want to start a cell phone company? Good luck with that.)
There are more one-in-a-million lottery ticket opportunities than ever before. But for the average person, there is actually much less opportunity for them to be successful. And not just less wealthy relative to the rich because the rich can gather sticks faster or whatever, but less wealthy on an absolute scale because there are no sticks left to gather.
It's nice to talk about making furniture and fixing up cars or whatever, but I think the number of fortunes that have actually been created by making wealth without externalizing massive costs onto the poor and middle class are probably few and far between.