Take it with a grain of salt but what I've been told is InArt's been struggling financially because of their 1/6 business model. They pay a lot of money for licenses, then have to spend a lot more money on production of their rooted hair figures.
Their Gandalf actually had to move factories because their first factory was too expensive and couldn't keep up with the demand. They also put up figures for pre-order to gain some money back for the production of second/third batches of their previously announced or released figures
So, this 1/12 line was born as a way to help them financially, that is actually why their 1/12 figures are more in line with SHF and not Mezco, because believe it or not a the production costs of a fully clothed 1/12 figure isn't much lower than the cost of a 1/6 figure, however the profit is way less because you can't sell it at the price of a 1/6 figure.
Sculpted 1/12 figures avoid this because they're basically toys, however InArt's strategy with their 1/12 figures will supposedly be higher quality sculpts and paint than what other brands offer but if they only do DC stuff then they're still paying large sums for the licenses and they have to compete with a lot of established brands that are already producing or have produces the same figures.
That's when video games come into play, as those licenses are much cheaper, don't come with likeness costs or a bunch of other complicated stuff attached and it's very much still an untapped market in the 1/12 world.
So basically expect to see a lot more of InArt's 1/12 video game line in the future, as it will essentially be what funds their 1/6 production, or at least that's what they hope, we'll have to see if the gamble pays off.