Three finger tap lookup no longer show Wikipedia pages since upgrading to Sierra

Apple uses Spotlight Suggestions for this functionality since El Capitan: https://support.apple.com/kb/PH21573

If you’re using OS X v10.10.3 or later and Spotlight Suggestions are enabled in Spotlight preferences, you may also see information about related music, movies, or map locations.

But Spotlight Suggestions are disabled for some reason in most countries: http://www.apple.com/macos/feature-availability/#spotlight-suggestions

Check if your country is in the Supported list. If not, you're out of luck at the moment, just as me. I couldn't find any normal workaround, that doesn't involve constant VPN connection. If you're OK with VPN inconvenience, cost and additional latency, you may check this solution: https://www.reddit.com/r/apple/comments/3cln0j/how_can_you_enable_spotlight_suggestions_in_mac/

Supported countries at the time of writing:

• Australia
• Austria
• Belgium
• Canada
• France
• Germany
• Ireland
• Italy
• Japan
• Mexico
• Netherlands
• New Zealand
• Spain
• Switzerland
• UK
• USA

This question is more than four years old, yet I did not experience the same issue until I upgraded to MacOS 11 Big Sur NOV 2020. This thread however helped me to work out an easy fix by clicking Spotlight in System Preferences and choosing both "Siri Suggestions" + "Other." Options now include an array of responses to three tap lookup such as News; Siri Suggested Web Sites; Movies; iTunes; Maps; et al. Often it displays Siri Knowledge instead of Wikipedia, but appears to scrape, or be interchangeable from Wikipedia. In any case I'm provided with deeper breadth and context then merely Dictionary and works quite well.