[ryan29]

I don't know much about the marketing potential for .dev vs others, but I think .dev is one of the safest TLDs in terms of registry management and longevity. It makes sense for Google to keep their TLDs priced reasonably to keep the web accessible and there are some big anchor domains on .dev; web.dev, pages,dev, etc..

[bombcar]

Google's also the most likely to suddenly decide they don't want to be a registrar anymore and just graveyard the whole TLD. They've done similar to bigger things.