Cheap to use shouldn't mean mean free or almost free.

Bitcoin is now past the era of needing to give out free samples and rely on word-of-mouth marketing.

All the right people already know Bitcoin exists and what it can do.

At this moment, we need to stop subsidizing transactions and see what price the market will bear in a 1MB environment.

Innovations and substitutions will ensue, and we may find we requires less (or more) than 20mb.

Let's give it some time and observation before fixing what is already working spectacularly well.