In general, yea they will. Like Audio Research. I lent my 1978 vintage preamp to a friend… he blew out one channel about 15 years ago. We contacted ARC… and they immediately told him how much it would cost.
Many people love an audio component… and after a certain time want to keep it. One of the reasons you buy a product from a company like Audio Research is it can be forever.
On the other hand, if you are chasing the highest quality sound possible… then you sell that reliable product with a company that will support it nearly forever to someone else who can be sure it is a good investment.
Alternatively, you can buy from the new company trying to get into the market. The cost will be lower… and some of the sound characteristics will be top notch… some of the sound characteristics may not be… the ones you discover when owning an audio product over years of use. Also, the company may not be there to support the product.
I recommended a Rouge product to a friend about 25 years ago when the company was new. The amp blew up in the first month. The founder told my friend it wasn’t his problem because it was a tube that took out the circuit, and he did not cover damage to the amplifier created by a tube problem. So, tough luck… pay an additional 1/2 the price of your amp to have it fixed. I absolutely guarantee that would not have happened with Audio Research. I was humiliated as I was the one recommending a Rouge product. If I were to do it again, I would have recommended a used high end brand, instead of a new comer.