The innovation vs stagnation debate has been had across all sectors, but it's imo also an effect of cost-cutting and risk-minimization. Every time something new fails, you lose money, which means you have to cut more somewhere else if you want to keep your profit margin the same. So instead, you don't try new things, you fire your creatives, you make every product more safe and bland.
Of course that's a bad plan, but that's where being drawn to reuse and reboots and endless sequels comes from.
We can't fix stagnation until we fix mindless profit-seeking to appease mindless demands for infinite stock price growth.