yeah, don't point the finger at Just Google here; all stores have always been like this .. and its quite common for competitors to knock each other off air. Sad :/
Hell, I wouldn't even point the finger at Google/Apple/etc so much.. its the DMCA. It costs nothing to fire off a DMCA takedown, and it costs a lot (time, possibly $$) to recover from it; any situation where a nuisance entry level is low, it'll be abused. (Consider ou boards.. use the search function, or post a newbie post? Using the search takes just an instant of time, but peopel rather post and forget, let other people do the footwork..)
If Google had to respond to every notice, they'd be spending a lot of $$ doing it; they prefer presumably to let the DMCA take care of it the way it was intended (stupid as it is.)
So, sucks for everyone involved :/ Cant' count how many of my favorite apps have vanished for weeks at a time, while they unfuck up this stuff.
Sadly, emu authors should _expect_ this as well; its actually not too common now, but used to be various copyright owners would troll us emu devs, causing all sorts of mischief :/
jeff