[ Pressing F intensifies ]
But yeah, that kinda sucks. Hopefully Ubuntu server remains 32 bit, otherwise we'll be telling people to install 19.04 and incrementally upgrade to current.
That or we'll tell people to install Ubuntu on a 32-bit 64-bit system and add multi-arch support by adding i386 as a foreign architecture. About concerns of programmers being shut out;
That isn't happening, though. 64-bit's been around since Windows XP was a thing. There are more than enough legacy x64 components banging about overseas for kids to play around, with only the motherboard and processor being of concern. The rest of the components should be relatively low-price, or free depending on what's compatible in the junk heap.