I wonder if the reason Twitter never sees any significant evolution in product is because they've weighed themselves down with too much iron cladding on their services or if they've had more time to iron clad their services because they never evolve the product.
Neither may be related but for a large company with very little product they seem to produce astoundingly little.
They may have very little functionality, but do it at scale. e.g. even searching tweets (which doesn't seem to work that great...) is a massive undertaking (not astoundingly little) that they're obviously still working at.
That's a fair point and I don't trivialise the engineering however I am taken aback by the just how little product they produce. In a similar timeframe Facebook had created vast swathes of product and dealt with far greater user numbers than Twitter.
Neither may be related but for a large company with very little product they seem to produce astoundingly little.