Yes, but a convenient reserved TLD, formally declared never to be used by anyone and guaranteed to never resolve to anything by global DNS, is not accepted based on convenience alone. The ".dev" TLD is plenty useful as real domain. Plus, and this one's hard to believe, calling programming related work "dev" work is a surprisingly recent thing.
.com is for .com. You can interpret it any way you'd like and it doesn't make a difference to anyone who isn't currently interested in the history of DNS.
My preferred reading is .com for commonlymisinterpretedbypeoplewhodonotreadrfcsbutitdoesnotmatterintheslightest, which is a Welsh word meaning "oddly shaped sheep".
I'm not sure how that leads to the conclusion that other short, convenient TLDs like `.dev` should just be given to companies like Google to use very sparingly, if at all.
EDIT: Looks like I misunderstood what Google having .dev meant in the above discussion; domains using it are available to purchase through their registrar (or more precisely resellers since I guess they don't sell directly anymore)