It's not that their other businesses are failing, but pundits are calling this the nail in the coffin in Microsoft's effort of breaking into the mobile market,

It's not that their other businesses are failing, but pundits are calling this the nail in the coffin in Microsoft's effort of breaking into the mobile market, and in a bigger picture, transitioning some of their aging business/product line to cope with the new consumer market. If you put it that way, then it does seem like a slow and long decline is what awaits Microsoft in the future.