Then you don't understand the purpose of a landing page. If the boring company hires somebody to make the landing page who actually understands their job, the landing page will have great importance.
Most companies don't need this. They need a page that has their contact info and some general information about services they provide so they can have a bare minimum internet presence and show up on google maps.
Absolutely, if your company doesn't want to make sales or if you want to be bothered all the time by people calling and mailing only for them to find out your product isn't a fit for them. Or if you want third party sellers to take over most of your business like Booking.com, AirBnB DoorDash or Amazon.
Companies who understand the importance of a customer friendly and functional web presence get a great return on their investment. And it's much better for the customer.
I have an ice cream shop by me that doesn't even have a website. They're mobbed every day, because good ice cream is fairly self explanatory, and doesn't need a web presence
Your ice cream shop doesn’t need a landing page because of word of mouth and foot traffic.
Some project management platform for plumbers needs a highly tuned webpage because they’re competing with 20 other such systems, and there’s no line to walk past and assume it’s there because the software is good.
Believing that if you build great plumbing SAAS software people, paying customers will magically appear, is naive.
A great product can sell itself. But that doesn’t mean that marketing and sales aren’t necessary in order to get the product in front of people, assuage their concerns, reassure them that it solves their problems, show social proof from others using it, and close the deal. A good landing page will do all of this ;)