Could be, but acquiring business from a customer like Apple can also work to one’s favor. The volume required with an Apple supply contract should allow a manufacturer to drive down production costs, allowing for more profitable business with other customers.
That said, companies often pass on business they don’t think they’ll be able to make any money on, or because they’d rather not deal with a difficult customer.
Here's the problem with volume driving down costs - it often doesn't, overall. Especially where chips are concerned.
Let's say I'm a semiconductor manufacturer. I'm running at say 80% capacity, a nice place to be. A couple of customers offer volume opportunities. My sales force takes those orders. Now I'm at 99% capacity. My cost per chip has gone down, so my margins have improved in that sense, but I've taken this volume business at a lower price and lower margin. So in terms of cash flow, I'm not much better off. I may even be worse off. Similarly with margins even though I might be making more actual profit dollars. But my investors are perhaps not so impressed with their returns.
Now I have another problem. To grow I'm going to need capacity. I can't go to 101% capacity - I can't just add 1% extra capacity above my 100% - I need to build a new fab, and add potentially another 50% capacity or more. Sure, I don't fully facilitate my fab all at once, I can grow in to it. But I still have to build the fab infrastructure etc - takes time and money. A lot of money.
How do I pay for this? My margins aren't so good, nor perhaps is my cash flow. Perhaps I need a loan, or to have a rights issue & issue more stock... but on what terms... I'm not looking quite so financially excellent as I did before I took all that high volume, lower margin business.
OK - I can not build a new fab, or have any fab, and just use a foundry like TSMC, Global and so on. This is just what almost 90% of semiconductor companies do - they're fabless. But for the TSMCs and Globals of this world they face the same fundamentals.
The notion of higher volumes, especially at lower margins, being always or almost always a good opportunity is not so clear-cut.
Throw in the fickle hand of fast moving consumer goods markets like smart phones for example, and laptops etc, where today's preferred supplier is tomorrow's pariah because they wouldn't give the customer a crazy discount, and you can see why high volume business with aggressive customers is risky - not just for suppliers, but in time, for buyers too - one day, far too often, the buyer wakes up to a situation where the current supplier has end-of-lifed a part that is not quickly sourced from elsewhere, certainly not at the crazy low prices of yesterday. And one day there just aren't enough suppliers around, or certainly willing, to supply under the old terms and conditions. So now the buyer has to get in to a costly, risky perhaps, product redesign cycle just to stay where they were... the costs of this are usually 20x-100x the money saved by squeezing suppliers on price.
It's been a phenomenon for a good many years that in many cases buyers of semiconductors for high volume FMCG and similar markets and employing aggressive supply chain management approaches are the primary cause of their own supply longevity/stability challenges and associated loss of revenue & profit $.