as far as i'm concerned this is our biggest fear. I've been reading a lot of comments about this issue of microrelations and i've become familiar with some of our major fears (some of them are reality already and some other are on the way of turning reality)
As the first and biggest one i'll say it's the fear that developers will make grinding so unbearable, even more unbearable than on Hoshigami (for those who ventured on this game, psx release, i never tryed DS one) that we won't be able to ignore microtransitions anymore, this meaning we can get whatever we're trying to by grinding, but we would have to grind 3~4, maybe 10 times more than we are used to (and in some hardcore grinding games this is unthinkable) if they use this mean we won't have an option if we want to 100% the game (or get a determined weapon/car/gear/whatever) if we don't pay for it (or spend 400+ hours on the same grinding method/spot (fighting over the same enemies/ racing the same track/ whatever painful method that might be) we won't get it...
Now imagine this applied to games where grinding is already a concept that the game itself takes as a priority (e.g. Monster Hunter) , now let's pretend Crapcom is a terrible company that just wants money from their costumers not giving a single to them (let's just pretend, ok?! ) and now Capcom realizes they can make even more money on MH, because it has a huge fanbase and has the most unbearable grinding on all capcom's game library. Now all capcom has to do is create a new overpowered armor/weapon set that needs 1x whatevername stone and the droprate on that stone is 1/53430534 and the only monster that drops it takes something like 40 min to kill with the highest G rank set (best set in game)... you don't need to be a genious to know that you probably will never be able to acquire this item by the regular methods (grinding) ... now capcom makes a "cash shop" on the village and after you've beaten the game you can buy that stone for $10 each. There we have a problem! And that's what i fear!