The reasons the Chinese gaming community believes are behind BMW and PB0 not having physical releases at launch.
The biggest reason Chinese players believe is to prevent physical copies from leaking early.
Even the slightest change in the marketing and promotional strategy can have a huge impact. If physical copies were available at launch and some people managed to get the game early through leaked copies, gameplay videos would be all over the internet the very next day. All kinds of people would start nitpicking the game, and the community could get caught up in endless controversies even before the official release.
One example:
BMW has an almost unimaginable level of attention in China. Even without a physical release at launch, the opening CG was still leaked through an off-screen recording. After release, some people even used cheats to finish the game in a very short time, picking out all kinds of things to criticize—for example, claiming that the game “disrespects the original.” They then went on to call the game garbage. There were even absurd rumors about a secret ending unlocked after multiple playthroughs, supposedly called “Storming the Heavenly Court.” And when people eventually discovered that there was no such secret ending, some of them started criticizing the developers for not making multiple endings.
Secondly, Chinese players are predominantly PC gamers, while console users make up a relatively small portion of the market. Combined with Steam's relatively low regional pricing, the lack of a physical release actually has a fairly limited impact on Chinese players.
PB0 also has a very high level of attention in China. Their pre-order video posted on August 12 surpassed 10 million views within just a few days. They will most likely follow a similar promotional strategy to BMW, which means not having a physical release at launch.