The interconnection and interaction of different blockchains is very important.
It will allow to reduce transaction costs and make the use of blockchain more simple and comfortable.
If blockchains will be connected more people will use cryptocurrency. But it is not enough to connect different blockchains. It is necessary to connect cryptocurrency with fiat.
Now there is a big demand in the platforms that allow making cross-chain transactions. Because it allows to make the commissions smaller and transfer information and different assets between different blockchains.