I don't need to argue these facts with you
Well, you just did, I explained to you, the other members explained the matter in a different way but you still think that you are correct, it's sad that someone who registered here back in 2014 lacks a basic understanding of mining actually works, but if you feel good about yourself - it all that matters, numbers and law of physics are irrelevant.
Assuming I join solo.ckpool.org for solo mining, what risks are still present *except*
- the money I spend in hardware (including breakage)
- the money I spend in power
Other than the obvious like your miner catching fire and all the stuff that you probably already know, there only risk is the power bill and the cost of the mining gear.
Any tips are greatly appreciated. Thank you
There are solid gears and some low-quality gears, you want to get the ones that can survive, not S9k, S9se, avoid the 17 series of bitmain altogether, just search the forum you'll find a lot of topics that discuss mining gears quality and robustness.