New players get a soldiery bonus on top of the base soldiery reward the first time they do a dungeon, considering they have to clear each dungeon once to unlock high level roulette this alone ensures a big amount of soldiery over the time, people also get ~200 soldiery per main scenario roulette if there's a new player, which is most of the time.
By the time you unlock most dungeons you should have enough gear drops AND soldiery accessories to overcome the ilvl requirement for Titan HM, at that point you can get your zenith relic, unlock CT, unlock ST and run ST for i100 drops, UAT, oil and sand, along with soldiery, also run T1, T2 and T4 for the first time bonus + i90 drops, by then your ilvl should be high enough to unlock expert dungeons, and by then you should have a somewhat steady income of soldiery to keep upgrading pieces to i110, while still having some i100 pieces from ST and slowly working towards poetic gear.
This of course will take several days (no more than a week tho) but you are not supposed to get full i110 gear right as you get to 50.
tl;dr you guys assume too much, gear progression is fine, it's not hard for a fresh 50 to catch up, I find it a lot better than early 2.2.
EDIT: don't forget about S rank hunts, they give 50 soldiery for doing nothing but zerging monsters that take 2~3 mins to be killed, if you get into an active hunting linkshell and also happen to be online when most S ranks spawn that's a really nice soldiery boost, you can also use the seals for extra soldiery pieces and any log that drops for extra sands/oils.