Sorry I misunderstood your previous comment. I assumed you meant that they should include safety features for no extra cost, which they do, not that they shouldn't charge anything at all for safety features, which is such a weird and extreme take that I'm not sure what to even say...
There’s no moral problem with increasing the price when it becomes a better product.
There arguably is a moral problem selling a product with optional safety features that cost extra.
If tesla invented immortality fields within their vehicles, I have no doubt they would jack up the price, and that would be fine, because it’s now a much better car. To think otherwise would be silly.
Autopilot is standard in every single car Tesla sells now, for exactly this reason.
Here is the blog post on their website where they talk about making it standard: https://www.tesla.com/blog/update-our-vehicle-lineup