Oracle has this trademark in numerous countries. Even if this USPTO proceeding cancels it in the US, someone will need to cancel it in every other country to be safe for using it for a global software project/company. Because they filed directly in each country, rather than using the Madrid/WIPO process, a US cancellation doesn't affect the others at all.

(Likewise, even if Oracle wins this, they could still have to spend to defend it in other countries or risk losing it there if challenged.)