Google wants to get rid of URLs. I wonder what they are planning.
One way they can do this, and are doing it, is via the Chrome browser and any browser that has G set as the default search engine. People type words and phrases into the address bar and are taken directly to G's SERP #1.
There also seems to be some movement within G sphere to
align mobile apps with Web-based apps and this may involve how the .app TLD is utilized. This is pure speculation, but G seems to have clear long-term plans for that extension which includes the Android OS. There is a reason why G offers free SSL with each .app domain, and forces you to use it as a prerequisite to that domain resolving.
G wants to create an ecosystem that will make people stay within its confines and not use external URLs. Facebook is doing the same thing. All FB pages are on the single FB domain. It's an ecosystem. G tried to do it FB's way with G Plus, but that didn't work. So they are taking a different route.
Just noticed that
@MapleDots posted a reply as I write this.
Before we say that domain name's days are numbered, I think there will always be a market for privacy concerned individuals that will not want their private data shared on monopolized ecosystems operated by a few multi billion dollar monolithic companies.
There will always be room for new ventures to enter the market and create their own ecosystems. They will need a unique domain to do that.
Finally, brands will always want their own domains. If you stay totally within the G or FB ecosystems, you lose brand equity as you give it away to those companies.
Domains will always be necessary for companies. What
@MapleDots mentions regarding email and voice search, etc., relates to the average consumer.