Of course they cover all bases, but if you need the matching .com in addition to the new gTLD to mitigate traffic bleed, it kinda defeats the purpose of new extensions. Might as well stay on .com.
Actually they are still taking a chance imo. Because I wouldn't be surprised if they leak traffic to dxctechnology.com, that they don't own (afaik). Also, E-mail is a common source of typos.
I have done some experiments and I see a lot of NXD requests at DNS level. Traffic leak is more widespread than people think.
dxc.com is a sweet domain, and it's easy to type. Their new URL is very prone to typos and longer than necessary. Unless maybe their ultimate plan is to resell their LLL.com later.