The fluctuating price can become a financial disadvantage for them, we just can't hope every real life store would accept cryptocurrency while the crypto itself is not stable at all.
They don't like unstable thing, so do we are. Right ?
It is my understanding that Bakkt will allow people to trade crypto
into FIAT tokens to be used in Starbucks. Its not exactly enabling
Cyrpto useds to rock into Starbucks and pay directly with Bitcoin,
but its a step closer to that.
The Bakkt members are not accepting crypto directly but instead
they are accepting crypto changed to FIAT.
"Its first use cases will be for trading and conversion of Bitcoin versus fiat currencies,"
“As the flagship retailer, Starbucks will play a pivotal role in developing practical, trusted and regulated applications for consumers to convert their digital assets into US dollars for use at Starbucks,”
Reference > https://www.businesswire.com/news/home/20180803005236/en/Intercontinental-Exchange-Announces-Bakkt-Global-Platform-Ecosystem