OpenAI is winding down the fine-tuning API and platform - Discussion Thread

So if i have fine tuned models on gpt4.1 mini and openai deprecates it does this mean my model will never be used for inference? So i would have wasted money and compute on it? Also if GPT5.5 onwards models will be good at instruction following what would developers do with the money they have on the API Platform? As inference costs get cheaper and cheaper due to data center expansions and demands continue to increase will all inference be done using the same models released by OpenAI?