For vets with a lot of accounts, it's roulette, I had to log in to all 5 of mine, in game, to see who needed credits as I had only a vague idea that maybe a booster might be running out.  Just saying, the more obstacles in the way the less people will bother, the easier it is to buy something the more impulse you'll see.

Unrelated:  I learned yesterday after telling  a newbie that they only needed 1 point in industrial to pilot one that you nerfed sequers and upped the requirements to drive one at some point.  Bad; and not in line with the 'we didn't design around people having multiple accounts as a requirement' claims, all 'professions' should be able to drive the smallest U-haul.