Very infeasible to solo mine unless you have a large farm. If you have a few pieces of small equipment that won't get a profit anyways, you could solo mine (its like a lottery) with them in hopes of hitting a block.
I think lotto mining is a proper way to describe it for most. It just takes a LOT of hash to get a block. It's possible to rent a lot of hash so.... yes some might do it.
For most like me being a hobby miner electricity makes it where I need to pool mine. Solo mining just cant be done for most.
