My point is that it's not just the relatively small app developers, even the big names are playing this game routinely.
I heard in a course on stock investing that mutual fund managers also do this. If their fund fails in the market, they close it and reappear with a different name.
Even with this loophole, much thanks to Amazon which created the rating system benefiting the end users in spite of the damage it at times brings to the manufacturers. Amazon had to choose between manufacturers good vs. end-users good when creating this system, and they boldly chose the latter.