Probably is a new trend we like to drop unnecessary words from sentences.
Just like I dropped “it” from the beginning of that first sentence.
Also people say I bought the Blu-ray. That’s about the same right?
You would say, “I bought it on VHS”, or “I bought the VHS tape”. Saying “I bought the VHS” just sounds silly, considering I never heard anyone say it like that when people actually used the format. I know I’m losing this war, anyway.