Service Marketing (Pemasaran Jasa)

Bluebird is a huge transportation company in Indonesia. this service company has already own an application for booking. But now, Bluebird also join hands with start-up company, Gojek. In your opinion, why would Bluebird cooperate with online transportation company that is younger than itself?

(You can read article about Bluebird and Gojek in https://www.cnnindonesia.com/teknologi/20170330131538-185-203729/go-blue-bird-bentuk-kemesraan-baru-gojek-dan-blue-bird/)