It's kinda hard to argue that Disney didn't anticipate it becoming more theme park than movie studio. Yes, Disney hyped Orlando as likely to overtake Los Angeles as the production capital of the world but that was always part of the promotion process for the theme park (consider that Toronto was actually the production capital of the world at the time). Universal, in contrast, maintained that it would be a theme park that would offer productions as part of the theme park experience.
After the Studios opened to lackluster reviews and sagging attendance, Disney worked quickly to add entertainment, build new attractions and adjust incumbent attractions (e.g. the two-hour backlot tour). They continued to build and hyped the Tower of Terror as the park's marquee attraction and the park was only a few years old at the time.
Reality is, the Studios was quickly built in response to Universal and Disney didn't really have a solid vision for it. IMO, the park's not worth what Disney charges for a day's admission (even at the discounted price on a multi-day ticket) and most of it should be bulldozed and rebuilt. That said, most people I know who've been there love it, so that will never happen...