so because there is now ONE! blockchain from dubai government you think there will be no reason for any other blockchain?
which other blockchain you know covering all services usable on it? there will be several major blockchains required for all the services and just think about.
DBIX has already two other partners with own coins and they are not competitors but partners.... - everyone of them targets different kinds of services.

This coin from Dubai government looks like a simple coin for payment but nothing with smart contracts or anything else behind, it's even good for DBIX as this shows the commitment from Dubai government about the legal status or crypto currencies and is even advertising for crypto currencies itself and makes the people aware of it