If MaX were to buy a Brand TLD (.brand), he would want to be able to host on the root.
A Brand TLD is very different to the country code TLD (ccTLD) and generic TLD (gTLD) which service many domains and subdomains.
MaX Saxe Design could acquire .msd (sadly already registered by MSD Holdings).
MaX would want to be able to host on https://msd and register max@msd as one of his main corporate email address.
MaX Saxe Design would create as many subdomains as it could think of for .msd.
Sadly, root hosting is not ownly frowned upon by ICANN; restricted on all but a few ccTLDs which to this day root host.
Any Country root hosting does not make sense other than to link to subdomains or nic services such as dns,/nslookup, whois, etc.
MaX proposes ICANN allow all Brand TLDs to root host.