Many bookstores will donate surplus books to good causes. They often just have to rip off the front cover and return it to the vendor for credit to prove they didn't sell it.
Others will sell in bulk to surplus outlets like Ollie's where great books can be had for literally pennies on the dollar.
Kids will drive parents crazy asking them to read certain favorite books over and over and over again. Then one day you will see your grandchildren doing the same thing to YOUR kids and you'll just sit back, smile and enjoy it!
hahaha.... I'm old but I still remember that! And you know they are faking it when they are saying it out loud word for word but turning the pages at the wrong time! Hehehe.
When they do start reading you will get the constant,
"what's this word dad?"
I'm not sure there was ever a conscious effort to teach them to read at a young age; if you are reading to them every day from a young age they just seem to pick it up and start asking questions? And then one day they are opening up new books you just brought home and they are actually reading them!
One of the many joys of being a parent.