This:
$name = get_post_meta($post->ID, 'company', true);
Should hold the value of an ACF-based or native meta key called ‘company’ if the post ID is being pulled. If it’s not working, I would try to echo out $post->ID to make sure it’s correct, if it is, double check the field name. If echo $name works, I’d look at the rest of your code as it’s not possible to know what’s in the include or what else is going on.
Think this:
$html = file_get_html("https://other-website-url.com/company/.$name.");
Is where your error is, for example. Likely should be something like:
$html = file_get_html("https://other-website-url.com/company/". $name);
