Empirically, it seems financial stock investors rarely incur losses

I wonder if it's because the inherent tendency of financial stock investors is to seek stable stock price fluctuations and high dividend yields...
There's also the fact that once they buy, they rarely sell. The emphasis on dividend income also seems to be influenced by the fact that they tend to have larger asset sizes.
If you look at the average purchase prices and returns of Samsung Electronics investors versus the four major financial holding companies on MTS and Naver, the pattern becomes very clear.
Even beginners shouldn't aim for a windfall; if they just hold the four major financial holding companies for five years, they'll make a decent profit. But for retail investors, it's not easy to deal with things like seeing a 10% loss over a month due to small dips, only to see it climb back up to a 20% profit.