Iron Harvest, an ambitious RTS using the 1920+ setting has been a grand exception.
Lightweight base-building, cover-heavy infantry tactics and – in the case of Iron Harvest – mechs with their own complex underpinning damage mechanics.
It hit its initial Kickstarter funding goal within 36 hours, and just cleared its final $1.5m stretch goal in the last moments of its month-long funding drive.
King Art have had good success funding development through Kickstarter.