Unfair world
The most well-known products' marketing pages describe them in excess. The actual power of the product is far lower than what is advertised.
For example, a popular blog platform listed on their website the following function: A newsletter can be added to your website. But never expressly declare that a mailer account from a third party is required. There isn't a way to select a different mailer.
Another illustration of a function that is quite limited but is widely advertised: Any type of website can be made by you on our platform. However, it was never stated that it was impossible to alter the navigational structure.
On the other hand, there are other little-known products with much wider functional capabilities and greater flexibility. But relatively few are aware of it. Most people don't even attempt to look further and discover alternatives; instead, they have a blind faith in marketing and accept limitations as they are.
There are dozens of examples, but I haven't highlighted any in particular. The fundamental message throughout is to not put too much faith in marketing. Spend some time looking for something that actually works, not simply something that seems promising.