In addition to what others have said, I think with finance, the used of the blockchain technology is more practical, without having to explain to anyone, you can see it in action. Although other section are picking up interest like the creations of decentralized application (exchanges, gàmes etc) yet it can't still be compared with what can be achieved with finance most especially as money rules the world.

Another thing you should understand is the first mover advantage the finance sector has over all other sector, (all thanks to bitcoin for making that possible) as without bitcoin we won't have understood what the blockchain technology is all about.