Clearly nobody commenting here has owned one and had the joy of using one properly they are a marvel and highly addictive.
The thread is about live steam and not batteries!!
If you want to discuss other things then please start an appropriate thread.
I am assuming the OP is referring to Hornby OO live steam and the reason it didn;t catch on at the time was because it was a lot of money at the time to outlay and needed a dedicated track/control system.
It now has a dedicated following and many locomotives commanding a far higher price than originally sold for.
For more info please visit this website https://www.oolivesteam.com/