If you don't know, Berkshire Hathaway is Warren Buffet's parent company, a Fortune 500 company worth almost half a trillion dollars. Their website is made from a Word document. And it's perfect.
Buffet has done well by focusing intensely on a few areas—he calls this his circle of competence. He also keeps things simple: he runs his company out of a small office complex in Omaha, Nebraska with fewer than 50 employees, and refuses to use a calculator—he doesn't even have a computer on his desk.
How can they get away with such a plain website? Not only can they get away with it, but it works because it's in-line with their brand.
It's important that your website is aligned with your brand's values—and your brand values may not always align with the current design trends. Berkshire values long-term holdings, simplicity, and efficiency—Buffet hates spending money where a better return could be gotten elsewhere.
His website follows those principles. It's undoubtedly clear—you can find what you're looking for. It's efficient—probably made by a secretary, not a design firm. It's long term—it doesn't change to the latest trends. That's what makes it so good.
It also stands out. Berkshire could have, undoubtedly, paid a design firm millions of dollars to make them a website with images and parallax effects. That website would look just like any other. But that would go against the company's ethos. Buffet is committed to not only getting good returns, but getting the best return on his capital. It's why he makes his children companies send all their excess cash to Berkshire each year. To update their website for aesthetic purposes would make them fit in with their Fortune 500 siblings, but it is wouldn't to be the best use of their capital.
The website doesn't sell. Buffet has said that he wants to attract investors who will stick with Berkshire for the long run. It's why their Class A shares cost hundreds of thousands of dollars. He's not peddling his wares like a company, trying to pump up stock prices. He wants investors who will be with Berkshire for the long hall. He wants people who want him, and the website shows that.
This isn't to say that anyone can pull this off. It only works because it's representative of what Berkshire is. If you're a tech startup, you need a website that is a beautiful display of the latest design philosophies. But it's important to look at Berkshire's, and remember: maybe you don't.