Complex sentence: When these failed to perform on par with Capcom's more popular series, Capcom attempted to merge the studio back into their internal R&D, those at the studio chose instead to leave the company and Clover was closed.
Split into simpler sentences: When these failed to perform on par with Capcom's more popular series, Capcom attempted to merge the studio back into their internal R&D. Those at the studio chose instead to leave the company, and Clover was closed.