EU Parliament threatens wider ban on lobbyists as Amazon spat deepens

Lobbying in itself is not the problem. Potential corruption and bribery are the problem.

Lobbying is a group of people coming together to voice their interests and/or concerns to their representatives.
That group could be a group of individuals or a business. A business lobbying the government could be as innocent as them informing the government that proposed legislation would make their business uncompetitive, leading to a potential loss of jobs and/or tax revenue.

That said.. I don't particularly trust that Amazon's lobbying efforts are all that innocent