Because relic is tons of effort to begin with....your point was totally the same as my original point.
Btw back when delve was out and nobody uses MNK mantra rotation stun strat, some LS on another server beat it with RNG setup. Then I know certain LS on my server really started farming anni and lving/gearing RNG for every member just to get win.
So yes, ppl do level brand new job and build a new relic for new content if the reward is awesome.
You never know and I say yes. If the item is something that aren't outdated in next update, I know at least 2~3 group of ppl who reguarly do gil event by overpriced merc or ADL every day, and they can easily afford 300M mythic in reasonable amount of time IF every member want a mythic to beat something. Most people probably won't bother, but I know some ppl would, just very small %.
This arguement is invalid since every item is outdated in 3 months now anyways. Can't get an item? Just wait for 6 months until better item come. But if there's really 1 super item that's pimp forever and requires 6 Mythic to obtain, trust me ppl will go for it. Don't underestimate the hardcore player base