There are often a _lot_ of benefits that come with higher sales beyond simply revenue. For instance, you may reach a higher order threshold with your supplier, unlocking better pricing across the board. Or you may show better growth, attracting investors or other momentum.
There are definitely customers where cost is more important than revenue, which in my experience are companies "run by the accountants". In my years of consulting and being inside growing and dying businesses, I see there's 2 main drivers of a company: sales, or the accountants. One focuses on growing at any expense, the other focuses on cutting costs and minimizing risk. They aren't generally compatible, but they both have their place. Some company heads focus on one or the other, and some can balance it.
There's no way that you can claim cost savings are more valuable than increased revenue, it's just too complex.