Making concrete blocks and other concrete products is a great business.You are making items which are in constant demand and never go out of style.
There are a lot of businesses which enjoy huge success for a while then they just fade away.Take a look at things like beanie babies.They were a huge craze for years and millions were sold.
People bought them as an "investment" which would be worth a lot more in future.
Well Beanie Babies did advance strongly in price for some time.But inevitably time ran out and in most cases now they are worth from very little to nothing at all.People who sank a lot of money into their Beanie Baby collection are left holding a worthless pile of soft toys.
The trouble with something like that is that there is no intrinsic value and the item has no real use. It is just somethig that was created for a collector market which eventually died due to overproduction of the item.
Real products like concrete products are made to fill a market demand for a useful item.The demand never fades away and continues to grow in fact.
Get into a real business,producing real useful items and you will always do well.