Much has been written here and on discord regarding the market makers, both their benefits and their perils. I thought it might be beneficial to collect all the PRO arguments into one location for the market makers.
New player experience. This is a big one. Right now the MMs allow pretty much any new player package (except fuel that really needs to have a big asterix by it for new players) to make money out the gate. This is a big deal. A new player coming in during a carbon crash will still get by selling carbon (and yes, a vertical player with experts will still make money at a much higher rate of return).
One stop shop for monetary policy. MMs both control inflation and deflation at once. Too much money in the system, the MMs will destroy it for you. Too little money, the MMs will print it. As we saw when electronic sales got hot, the markets got moving, but T1 stayed affordable via the MMs.
Currency equivalence. While this is a market simulator, no new player wants to discover that they are holding large banks of Weimar Republic Marks. By having MMs we ensure that all currencies have some value to each other. Presumably at some point each currency will each experience their own Dutch Disease. MMs help mitigate against this.
A goal to reach for. While the probably needs to be a good discussion about what the right value for electronic MMs are, the NV1 and WR MMs gave multiple groups a big shiny beacon to aim for. Along the way we saw entire markets created along the way (why else would people buy FIM?). I suspect with the soft base limit we will see even more spin off market growth on the path to WRs (even corps will struggle to be entirely vertical to electronics), or at least more stepping back from T1 to focus on higher tiers. I suspect that the only reason shipbuilding really worked out was the massive money chests (and T3+ populations) from electonic sales.
There has been a lot of great discussion about alternatives to the MM system, and I’m not against a replacement. I just want to make sure we all realize how important the MMs are to the core game experience.