For ground transportation, ride$-$sharing programs such $as$ Uber are gaining popularity. Several companies, such $as$ OpenAirplane, DiamondShare, AirPower, Flytenow and SkyPool were formed $to$ offer similar air transp transportation programs using privately owned, non$-$commercially operated aircraft $onan$ expense$-$sharing basis under $14CFR61\mathrm{.}113(b).$ Determine the FAA's present position $on$ the legality $of$ such operations and the reasoning behind that position, and then evaluate its reasonableness.