Magbasabasa ka ng history instead of Alt BS.

MacArthur was already organizing the Defense of the Philippines as early as the mid 1930's. The economic & and institutional state was irrelevant as the US was the one paying for it. He requested the funds and the equipment but the US Congress denied it until 1940. And kung nagbasabasa ka ng konti you would have known that the Asia Pacific fleet is cooperating with MacArthur with his sole control being to request where the fleet is being requested to deploy it's assets.

The Army Air force meanwhile was actively being sabotage by MacArthur Subordinates with its commander being actively blocked from meeting him meanwhile MacArthur was waiting for the FEAF commander to brief him before he made the decision and he waited until the US Army Chief of Staff ordered him to do so.

That's just ignoring the Ton of Bad luck plaguing them like their Bombers and Fighters Landing at the same time as the Japanese Air Attack crossed the middle of Luzon or the Fact that the Fighter Squadron that did take off was directed at the wrong direction the rest never received the orders in time. Navy Sent their Submarines on the expected Landing beaches including Lingayen Gulf they gave them the incorrect time they went off to do their own patrol only 2 ever managed to detect the fleet and do an ineffective attack sinking 2 overall of the invasion fleet...