What about Renault, Honda etc.. ? they've powered championship winning cars in the past. If Mercedes do pull out, they should pull out their engines too, likewise for Renault .. F1 without any form of Manufacturer involvement is worthless, FOTA shoud have remained to counter bernie and his CVC group...

Greedy Bernie represents the interests of CVC, who borrowed heavily to buy the rights to F1.

Redbull should never have left FOTA, without the teams and manufacturers F1 is nothing..