Smart people will always thing because they are smart, they will surely be wealthy.
there are different kinds of smart and if you think that people who were smart in school would all be automatically wealthy then you are wrong because a lot of the times those who were not smart in school but were street smart ended up making more money than most
It all comes down to the qualifier then and I think based on the subject of discussion, it’s easy to assume the smartness that is being talked about here would be towards investments as, having it any other way could be seen as off topic.
Smart people often would be able to identify positions of wealth in an investment and be smart enough to make informed decisions on how to utilize discovered opportunities to benefit themselves. It doesn’t necessarily mean you would be wealthy but, could be rich at the very least.