If a copycat service can immediately clone the innovator's work and provide the exact same service, then they are likely to outcompete them, because they have much smaller costs.
To suggest that such freeloading should be encouraged removes any incentive to try and innovate in such areas.
You make something innovative, truck along carving out your niche for a few years, then a big company rips off your system and uses its massive marketing budget to crush you. Does not getting to massive-multinational stage in a few years mean you've done something wrong?
Or are you suggesting that it's only okay because they're doing this to Google instead of a little guy?
It's not necessarily a bad thing. That's what happened to the original IBM PC and it made PCs cheaper and led to the PC revolution. Did it suck for IBM and Apple? Yes, but the benefit to the world was immense.
