If 'life' could be accidentally started, and continued, in uncontrolled conditions, shouldn't it be possible within very controlled labratory conditions? I've been hearing about scientists working on this for 50 years.
You can't easily replicate the right conditions.
Maybe we could create the conditions in a test tube. But the early earth might have been the equivalent of a billion such test tubes, each being periodically replaced by another such test tube, and this continuing for maybe 100 million years.
If abiogenesis is highly probable, then maybe it could easily happen in the lab. If it is highly improbable, then it might need a vast number of experimental situations, repeated for millions of years, such as may have happened in the young earth.