Difference is you can make plat in game in Warframe and use that to buy that new frame from other players. Even GW2 has a way for players to attain micro transaction currency. If we could get silver by turning in stupid amounts of legendary shards or masterwork cores it would be a different story. They aren’t the first people to ever make a mmo with micro transactions other companies have been doing better and for longer, it’s possible they just just need to pull their head out of their ass and look around.