If you’re serious about conversion marketing – that is, getting people to perform your intended action upon arrival at your landing page – then you have to get your point across quickly and effectively. Throw too many messages at your potential customer and they’ll feel like they’re herding cats (too much effort with very little chance of success).
To help visualize the problems that an overcrowded landing page can present, consider the example of purchasing a book in the brick and mortar world.