You're not thinking big enough. A star trek style holodeck (or matrix-style brain port) has the possibility to simulate literally any experience with roughly constant resource inputs.
Short of literal deception, advertising cannot offer someone with access to those technologies anything.
Why would someone sell you a holodeck once, when they could sell you plugins and content modules for your holodeck continuously forever? You don't think you'd get bored looking at the same trial plan holo-beach for years?
Of course, piracy and/or open source will hopefully be around to offer free alternatives.
People cannot be easily prevented from using (or trading) a thing they make themselves. Enforcement of it requires serious violence. Previously, that resulted in communist revolutions.