A buying committee is the group of people inside an account who collectively decide on a purchase, typically spanning the economic buyer, the end users, and functions such as security, procurement and legal. In enterprise software it commonly runs to six to twelve people, each with different concerns.
Because the risk of a bad purchase is distributed. Software that fails costs the end user their time, the buyer their credibility, and security its exposure. Each of those people is protecting against a different failure, which is why a message that satisfies one can actively alarm another.
That one page cannot do the job. The economic buyer wants the business case, the practitioner wants to see the product, security wants the data handling. Sending all three to the same page means two of them leave to find what they needed, and one of them stops looking.
Start from deals you have won and list who was actually in the room. Most teams discover they have been selling to two roles and hoping. Then check multi-threading coverage on live deals: how many of the mapped roles you have actually spoken to.
The people who never fill in a form. Security reviewers, procurement and the skeptical peer read everything and identify themselves to nobody, which is why they are best served by content that is open rather than gated.