I didn't up or down-vote your comment, so I can't speak for those that did, but I'll just point out that market influence is likely a bigger competitive factor than resources at one's disposal or market cap. The market cap difference between Google and Apple are not all that relevant to the amount of money they choose to invest in development, acquisitions or marketing, the aspects that influence their ultimate ability to compete given the will to enter a market. Market influence, however, is a hugely different story. Google owns 90%+ of the web search market, comparable to Microsoft's daunting lead in the commodity PC OS or office productivity software markets. Google's search business is the core of Google's profitability, bringing in the lion's share of their revenue.

Let's compare to Apple, who doesn't have a majority share in any competitive market besides portable music players and digital music distribution. The actual share of revenues from these businesses is a small and shrinking fraction of Apple's income. The portable music player business is collapsing in the face of evolving consumer smart phones and mobile internet devices like the iPod Touch, and the digital music distribution is an insignificant part of Apple's revenue. All the areas in which Apple is making all their profits are either nascent markets like consumer tablets and mobile internet devices, or Apple is a relatively small player. To imply that Apple can use their position in these markets it doesn't dominate to unfairly move into other established markets needs a bit more supportive evidence than that.

Apple essentially owns the mobile application market — and the tablet application market, if you're inclined to separate that out. Apple's position in those markets is at least as strong as Google's in search. (Yes, they make more money from hardware, but remember we're discounting that under the premise that market influence is the decisive competitive factor.)

Apple also has disproportionate influence even in markets where it is not a monopoly.

It's not clear that those markets have ever been truly competitive or relevant in the first place. To someone like the FTC or the Justice Department, mobile apps are a nascent market, and they're not going to touch it with a 10-foot pole.

As for Apple's skill in managing media exposure and marketing, that's certainly not an area in which they can hope to have any kind of monopoly.