Most of which is not true for the average homeowner that isn't investing as they are immune to capital gains and income tax due to the homeowner exclusion. So

Most of which is not true for the average homeowner that isn't investing as they are immune to capital gains and income tax due to the homeowner exclusion. So they eat ~8% (tops). Landlords have to buy and hold because they eat the taxes. Redfin caters primarily to homeowners so you aren't really their target market.