Dont ever think xyz will be the next best thing, it wont, the same as all the other new extensions
Its just a gimmick extension and it only got a little media coverage (mainly to domainers) because Google registered abc.xyz, they only got that because their parent company is Alphabet
all the new extensions come along and its only domainers that know about them, 99% of companies would never hear of them or even know they exist
I remember when .CO came out and A grabbed A.co, Twitter grabbed T.co and Overstock grabbed O.co, domainers went crazy over them and wasted a fortune on them, look at the extension now. Its just about brand protection with these big companies, it makes no difference to the overall market as you can see.
Feel free to grab a few and take that risk, but just dont waste a lot of money on them....just my opinion :D