He started the company, without the internet, so it is his. That bit about the company being yours some day might well be true, assuming the company outlives y

He started the company, without the internet, so it is his. That bit about the company being yours some day might well be true, assuming the company outlives your father. I take that to be the meaning of the promise. If he sells the company, there is still the money from that. The promise is only truly broken if he has a will that excludes you. So, not really a problem there... but you are an adult now and may decide to go elsewhere for better pay or any other reason.