A little while after Alphabet was born, to their bad luck, Alphabet.com was already owned by BMW who was not ready to sell the domain to them
So, with a negotiation Alphabet registered itself with the domain abc.xyz ( I still feel this is cooler that Alphabet.com )
Google Alphabet bought the domain was because that was explained to us by their representatives in the following way.
With ABC.xyz registered by us, we relaised we missed out some letter, so we are just being thorough.Google, oh, I mean Alphabet has no plans about what will be the role of the 30 character long domain as of now.
According to the website FreeValuator.com, the domain abcdefghijklmnopqrstuvwxyz.com is worth $2,717.04 but we think it was purchased for way more that that. However, I do not have any comments on this.
Oh, do not try seeing the website, because your browser will show you an error.