Jesus Christ, three minutes in and I don't think I can bother watching further. I hate the demonstrators' whiny voice, I hate the fact that it's a straight rerun of the demo we've already seen, I hate that it reveals that there's some kind of pseudo-MOBA wave shit in what looked like him clicking Gabriel forward and the army autofollowing seemingly without any further micro- feel free to look over it further, I'm not going to right this moment, but that's what it immediately appeared to be- and worst of all, Gabriel is voiced by some uninteresting dullard rather than Paul Dobson. It's not even Brian Dobson if I'm hearing right, who filled in for him in vanilla DoW II for who knows what reason. I don't know who that is, maybe it's Michael Dobson, I wouldn't know.
Not great. Having your FTL system be dependent on going through the Warp, the space equivalent to the Bermuda Triangle- except in a galaxy wide parallel dimension which is in fact the collective consciousness hellscape of the tortured psyches of said entire galaxy- and also occasionally end up with said dimension bending time and space in uncontrolled fashions so that you come out early or late, with the most extreme examples being millenia at a time, and sometimes simply swallowing you up, makes a troubling prospect for shipping. The Warp is, of course, mappable and navigable as a kind of three or four-dimensional ocean, but that's still not great to work with even with third-eyed mutant superpsyker Navigators navigating. Still, you need as much materiel going out as you can.
This is part of the reason why you find so many worlds in the Imperium are hyperspecialized and their tithes arranged around this, beside making for great sci-fi thematics & aesthetics. Agri worlds tithe food. Forge worlds tithe industrial products. Less specialized but well-developed worlds tithe some mixture or another, or perhaps a resource of note. Undeveloped worlds are likely to tithe manpower, since they have nothing else to offer, all the way down to feral worlds bringing up regiments of Conan the Barbarian strongmen. Then there's always oddballs like the Knight Worlds, which are food or mining-centric colonial worlds that survived the Dark Age of Technology, but were knocked back to a feudalistic societal model, with the knights in question using miniature titans to protect and/or lord over the enserfed. If you can imagine it and it isn't too flagrantly heretical, it exists somewhere in the Imperium. And if it is too flagrantly heretical but not outright Chaotic, then you can expect the Ministorum to come in and set up a syncretism to get the locals in line.
Regardless of efficiency, the Imperium is at war with everything around it, ceaselessly, because generic xenos are bastards who want to carve a piece out of Man's pie, and the heretics are bastards who want to fuck up the Emperor's shit, and the Eldar are tsundere bastards trying very hard not to die or fail to prevent universal calamity in varying measures, and the Orks just want to fuck up everything, so on. The Imperium is in a state of total war at all times. Those worlds which are at relative peace and have not been forgotten by the Administratum (which happens a lot more often than you'd think) are definitely going to be in a total war footing if they aren't some foo foo resort world. Even Shrine Worlds assuredly have sweatshops producing holy scripts, purity seals, unguents and the like. That's my take on it, at least. Mind that 40k is to a great degree a make-your-own-headcanon, as it rather has the old Star Wars arrangement of varying degrees of canonicity. Not nearly so formalized as the Star Wars canon, mind, because GW is pants on head retarded and doesn't care, but it's the best description I can come up with.