I see your point but 247 or 365 are not phonetic compatible with the 360
360 has an advantage and generally all numbers with 0 at the end
247 = two four seven OR twentyfour seven OR two forty seven
365 = three six five OR thirtysix five OR three sixty five
360 = three six zero ? OR thirtysix zero ? three sixty
In any case that is not the only leading advantage of 360
As for the future of 360 as you mention i will give you another example with 365 that is much older than 360 and we have data
bet365.com , created in 1999, still live and popular
We have to wait and see for 360 but i will tell you that i never saw domain trends faint so much that loose can their meaning
For example i remember the e and i prefix many years before, still there are very popular
How many today know what the "i" stands for (interactive, i(me), ....)
The old 247 or 365 are also live and still people register them
Don't forget also that the most crucial point of 360 is not the pronunciation or the increasing number of registrations in a daily basis, BUT the number of developed sites and the service awareness of the owner that will build the site to the mind of the surfers
For example : How many do you believe they will run to buy 360 names if google launch a new site with the name (for example) site360.com ?
The success of the developed website will be shared with the domain name. If the name is a domain trend, this trend will be established to the eyes of the visitor. Awareness and Replication = A big Boom for trends